Sergio is quite simply the best trainer and best partner in fitness you could hope for. He is vastly knowledgeable, calm, kind, and totally directed. He always makes you feel like you CAN do it - whatever "it" might be - and clearly expects you to just get in there and get it done. And though I sometimes have to dig way deep, there's always so much satisfaction in discovering that Sergio is right, again. For his birthday a year ago, I presented my husband with a package of sessions with Sergio at Body Matrix. My husband is a pretty hardcore cyclist and, I thought, already in great shape. But I figured he's always up for an athletic challenge and weight training would be something new. What I didn't expect was that my birthday present to my husband would be a gift to me. By the end of a summer with Sergio, my husband looked amazing. This winter I started working Sergio myself, hoping for a little of that transformative magic. I got that, and more. I'm a forty-five-year old mother of two, in pretty good shape generally. I run, ride, swim, climb, do yoga, blah blah blah. But I had never lifted a single weight in all my athletic days. In just a few short months of working with Sergio I've had amazing, hard data, results: from beating my "best possible hoped for" Wildflower triathlon time by over ten minutes, to finally losing that stubborn last five pounds, to dropping several body-fat percentages. In case you are not aware, middle-aged women very rarely have this experience, regardless of how much they pound it out at the gym or on the road. Last but not least (& in no way "hard data," but more than good enough for me): my husband thinks I look great. I often see other trainers, both men and women, working with clients at Body Matrix and they seem to be giving their clients great service as well. I see the same folks there, week after week, looking better and stronger all the time. I only have one regret regarding my experience at Body Matrix: I so wish that I'd found Sergio sooner. read more

Stats ONE YEAR out. It's all in the numbers... Day 0 - 08/11/2009: Weight: 163 lbs. Body Fat: 16.4% 105 Days Later: Weight: 155.5lbs. Body Fat: 11.2% TOTALS: 5.2% Body Fat Loss, 9lb. Fat Loss, 2lb. Lean Body Mass Increase ONE YEAR Later: Weight: 157 lbs. Body Fat: 9.8% TOTALS: 6.6% Body Fat Loss, 11 lbs. Fat Loss, 5.5 lbs. Lean Body Mass Increase Thanks Sergio!!! read more

Oh man where do I start!? I first started seeing Sergio when I was 23 (2 years ago). A few months ago, when I found out I was chosen to compete in Donald Trump's Miss California USA pageant, I came straight back to Sergio! It is no small feat to get a body ready to walk on a stage in a swimsuit in front of hundreds of people and TV cameras, and some of the MOST critical judges, but Sergio welcomed it confidently. Sergio asks the right questions in order to perfectly understand your goals, and what you want to look like/feel like ultimately. For me, I wanted to be lean and toned. Results? I am now a size 0, and more toned than I've ever been- not to mention more stamina than ever. AND I still have 2 more months to perfect things before my pageant! Each training session is different and geared specifically toward you and what you want to achieve. For example, Sergio introduced me to boxing which I LOVE, so he adds that in at the end of my workout for some condensed cardio. If we start doing a specific exercise and it doesn't feel right to me, he will immediately substitute something better so that each exercise is productive. Just 2 months later and I have met all of my major goals by dropping fat, and gaining muscle tone. All of my measurements have decreased, as well as my weight and body fat percentage. I have referred several friends to him and they all had positive experiences as well. I can not recommend Sergio enough! He knows what he is doing and I have personally seen the results to back it up. If you have found him, YOU are the lucky one!! =) read more

I was referred to Sergio Ruiz in August 2009 by Adolfo Liu from Avanzare Chiropractic Sports Therapy. . After being treated successfully with ART by Adolfo for a hamstring injury, he said I needed a "strength trainer" to further advance my recovery as well as reduce my chances of a future injury. At first I thought, what's the difference between a strength trainer and a personal trainer and why shouldn't I just go to one of the trainers at my local gym? After 3 months of working with Sergio, I now know the difference. Sergio introduced me to a series of targeted exercises that I had never performed on my own or with previous "personal trainers" at my gym or other fitness studios. We focused on upper body strength and lower body conditioning. My goal was to continue my injury recovery and build strength that would compliment my existing endurance training for a 70.3 triathlon. Mission accomplished! Working with Sergio allowed me to make the most of my triathlon training thus helping me shave off 8 minutes from my swim and an hour from my bike on race day!!! I was stronger where I needed to be and recovery after my sessions with Sergio, my 50+ mile training rides and my 10+ mile training runs was a breeze!! There's nothing worse than feeling like total crap the day after a work out or training session. Each day I felt stronger and the day after the race (yes, 70.3 miles!) I felt like a champ. There's more. I had no idea the value of believing in myself AND my body and how much that would benefit me during training and most importantly on race day. As a result of my strength training with Sergio, I now trust that my body is stronger than I ever gave it credit for previously. That was a huge benefit to me during the grueling final 8 miles on race day. With a positive mental attitude and belief in ones self, you can accomplish anything. Thanks Sergio! read more

I think the guy David who wrote the review below probably sat on his couch daily eating junk food and then wrote the review wondering why Sergio didn't make him fit! Sergio is amazing and being that he has been my trainer for over a year now I think I would know. I have lost 30 pounds and toned up tremendously. He has changed my work out to accomodate each fitness level I would reach where as most trainers do the same routine with each client. If you want to see results and are willing to work for them, Sergio is the one trainer in the city that will help you achieve your goals. read more

Just after getting engaged I decided it was time to work out with a personal trainer. I spent hours online doing research and decided to go with Sergio. I narrowed my choices down to a few trainers and decided on Sergio because of the positive reviews, all of which were extremely results oriented. Signing on with Sergio was definitely the right decision. I am ~3 months in and have seen good results so far despite a ton of travel on my end interrupting our workouts. I just signed on for another couple months and am excited to see even greater results. He pushes me really hard from the minute I walk in the door until our time is up. He also consults on my diet and takes time to email me detailed suggestions when needed. For example, when I was traveling for over a week he sent me a detailed exercise plan. read more

I love the boot camps!! they are a really good workout. The trainers check constantly on how are you doing and the form of your body to prevent injuries. I really enjoy my work outs here and I Highly recommend them. read more

I've really enjoyed training with Sergio. I've been training with him for the past 2 years, off and on. I've left every session energized and inspired to eat more healthy and exercise more regularly. The workouts he plans for me are well-thought out for my skill level. He watches every movement carefully to make sure I'm executing each exercise with good form. As a result I'm always challenged to a level of difficulty that's never beyond my capacity. I've worked out with other trainers, and none of them compare. Either the direction was mediocre (she just wasn't very knowledgeable), or the trainer was constantly distracted by other people at the gym (too many hot bods @ 24Hour?). Sergio pays attention and notices when I have tightness in certain areas. He's shown me different stretches to work on better flexibilty, the key to doing a greater variety of exercises. He plans different exercises to keep the muscle groups guessing and working each time. It makes each session interesting and invigorating when I feel I've accomplished something new every week. I love working out at Perfect Fit. The space is like someone's home -- a private gym with everything you need. Well, except a shower, but that's not essential. It's an intimate space, but I never feel like we have to wait for a machine or weights. We've shared the gym space with at most 2 other trainers and their clients, and it's never felt crowded. Oh, and I'm so tired of seeing people throw around gym benches/weights like it's a piece of crap. I notice Sergio is very respectful of the equipment, and that speaks volumes to me about the detail he spends on my training. When I tell my friends I've done dead lifts and trained with kettle bells, they don't believe a girl could do any of that. Thanks, Sergio! For giving me fodder for boasting! I know this sounds like a commercial, but I have nothing to complain about someone who works so hard to make sure I get closer to my workout goal. read more

I started training with Sergio a short while ago, and I've made incredible progress towards my fitness goals with his support and expertise. Every workout involves different movements and activities- this not only keeps things interesting, it also keeps your body guessing- by not allowing your body to adapt to the movements or weight, the results are continuous. More than being able to craft well tailored workouts that meet your specific fitness goals, Sergio is incredibly patient and attentive. He makes sure you maintain proper form throughout the session. He also takes body measurements at several week intervals, which allow you to track your progress in a tangible way. His concern is with complete body health. He had me keep a food diary and gave me feedback on constructing a better nutritional profile for myself. He also gave me a body weight workout routine that I could follow when I was out of the country for a couple weeks. He goes above and beyond any personal trainer I've ever met. I really cannot recommend him enough. Training with Sergio is the most fun and and most immediate payoff (in terms of body composition) I've ever experienced working out. It's also clear that he cares about what he does and has a genuine interest in your success- both really important characteristics in a personal trainer. read more

I began working out with Body Matrix about 15 months ago. Despite the fact that I am a skier, mountain biker and former triathlete, before working out with Sergio, I had never focused on lifting with my legs or core training. The results from two one-hour sessions a week have been astonishing. My personal records (PR) on a number of workouts have increased dramatically and my strength has increased greater than 2X in a number of areas. However, the most exhilarating thing about the results with Sergio is how I feel away from the gym. When skiing I feel like my legs are 10 years. This is why I train - to enjoy life more. I can't imagine a better coach than Sergio. read more

I came to Sergio to fix a specific problem that I had and have stayed with him to improve my overall strength and fitness. Sergio looked at the problem and immediately went one step further in figuring out that it was not only my glutes, but also my calves and hips. After 2 sessions he had it all figured out! In fact I was much better after our first session. I've worked with trainers before, but he was able to quickly take in the existing information, build on that, and fix the problem. He also sneaks in information about nutrition and good eating habits! He is easy to work with and is flexible dealing with my schedule. I'd recommend him him not only to someone with a specific problem but also to anyone who is interested in overall strength and fitness training. As my problems were getting fixed, I realized the benefit of continuing my training with him. read more

Results, Results, Results. After research and interviews with other Personal Trainers, I selected Sergio to get me into wedding shape. I started with Sergio 10 weeks before my wedding, and within a month, I'd dropped over 5lbs and lost 1 inch of all my trouble areas (hips, thighs, waist), and was noticeably toner, stronger, and feeling way more energetic. Working with Sergio, you never know what to expect! He mixes it up with kettle bell training, boxing, circuits - you'll never get bored! What's also great is his boot camp (REACTT Boot Camp), which is a nice option to combine with his Personal Training services (you know, if you're trying to maximize your money and all). Mind you, I've done other boot camps and training (women's ones, ones that utilize rope like contraptions that hang from the ceiling), and I've never gotten results like this, in this short amount of time. Sergio will get you to your goals - even if it means being real with you (we discovered through my food diary, that my entire diet consisted of carbs -oops). And being real, also means being realistic (carbs are good, just make sure they're complex carbs, and cheat days are great days!). Definitely give him a call today!! read more

Stepping into a gym for the first time in 10 years was daunting, to say the least. I was overweight and felt that I had to be skinny to join a gym. But then I signed up for personal training sessions with Sergio and my life hasn't been the same since. His dedication to helping others is second to none. Instead of making a generic fitness and meal plan, he asked me what my goals were and really listened to what I had to say. At first, I had some concerns. I looked around the gym and wondered what I had gotten myself into. Any feelings of apprehension soon disappeared, however. His fresh and imaginative workouts, custom tailored to my fitness goals and abilities, are both fun and challenging. As I progress, so do the exercises. He is a consummate professional; completely focused on my form, my health, and my safety. Unlike some trainers who would want their clients to remain dependent upon them, Sergio teaches the proper execution of each exercise in such detail that I can do them myself during my own workouts and still maintain the highest levels of safety. When I first started working out, I didn't know what to expect. With Sergio's encouragement, he has helped me push beyond my self-limiting notions of what I can and can't do to the point where I now ask, "What's next?" With his extensive knowledge of kinesiology, Sergio has taught me about how my body works and how the muscles respond to each exercise. More than knowing what exercises I am doing, he has given me the understanding of why I am doing them. Since meeting Sergio, my lifestyle has completely changed. I feel healthier now than I ever have before and I owe it all to him. read more

I have been training with Jennifer Song for almost 2 years. She is a great motivator, and pushes you to get the best results. Jen truly cares about her clients, and wants each one of them to be successful. Jen doesn't only train, but she also helps you with nutrition. With Jen's help, I have been seeing my waist, butt, thighs, and arms get thinner and thinner, and my strength has increased immensely as well. Overall, Jen has helped me become the person I always wanted, stronger and leaner. I would highly recommend Jen, because she isn't only a trainer, but she also becomes a friend. read more

Jennifer Song is a great PT: she pushes you to your limit and beyond! Everytime I work I with her I feel she utilizes all my muscles especially my core and gives it a good kicking! Her workouts are varied and you never feel like it's the same routine. You will not be disappointed working out with her! She is tough and she whips you in shape with a smile :)!! read more

Since I have started training with Sergio my work outs have become really effective. Before training with him, I had hit a plateau in my workouts eventhough I got to the gym 4-5 days a week. Now, when I am at the gym, I follow the work outs that he developed for me and each one changes so it does not become repetitive. I feel like I actually spend less time at the gym. I highly recommend training with Sergio, he is really good at what he does and you will definitely see results. read more

Can't recommend Serio enough. I'm a runner and needed to strengthen my core to avoid a nagging series of running related injuries. After trying a number of different group work-outs - I knew I needed guidance with maintaining proper form. Sergio challenged me with workouts that I never thought could manage always providing feedback to ensure my form was correct. He mixes up the routines so each session is new and different. I appreciate how he's helped me incorporate weight training with running. I'm stronger and more confident with weights. Sergio is an excellent trainer - so happy I made the decision to work with Sergio. read more

I have been working out with Sergio for a year and half now and I don't know what I would do without him. Sergio has a unique combination of nutrition expertise and workout knowledge. He constantly varies the workouts which was critical to my success. In addition the workouts are tailored to you and your needs. I never saw him doing the same thing with his clients. What also has been instrumental to my success has been Sergio's realistic approach. He understands that I am a working mom and I am going to have that glass wine and cupcake. He makes the workouts safe, practical and durable for the long haul. Sergio is extremely knowledgeable, professional and inspirational. I highly recommend Sergio to anyone who is looking to lose weight, get in shape, take their training to the next level, or who just wants to feel better. read more

Results fast! When I moved to San Francisco I was referred to Sergio by one of my friends. Sergio has gotten me results fast despite my being out of town for weeks at a time. He is great at listening to clients' needs, structuring workouts around specific goals, and constantly challenging the body. He is extremely knowledgeable and is a great motivator. I highly recommend you contact him whether you are looking for a massive change or a few tweaks to your physique. Thank you Sergio! read more

I initially started going to their boot camp and it was great!!! It has been a while since I had worked out last, so to get into this boot camp was fun. All of the Trainers were encouraging and supportive of the difference in everyone's abilities, so it made me want to keep trying. And I am not easily motivated by other people. Every session was different for the most part and left me sore every single time (but in a good way). Everyone in the class are also very supportive and friendly. There were also occasional barbeques, which allowed for a good time and good food. read more

Sergio is, hands down, THE best trainer ever!!! I have been a runner for as long as I can remember but after suffering from a stress fracture/reaction of the shins for over a year, Sergio was recommended to me by Dr. Aldolfo Liu (also great) to help with strength training. I've only been going to Sergio's Body Fit Classes at Granite Planet for a month but can feel my overall fitness level getting stronger. Sergio isn't like the other trainers, he has an inviting energy, cares for his clients, and if you have an injury, he's very cognizant of modifying the workout so that your injury isn't aggravated. Sergio is very encouraging but definitely pushes you. Waking up at 5:30 in the morning twice a week is tough but well worth it working out with Sergio. If you don't believe me, come down for a workout, you will feel the effects days later. If you still don't believe me, look at the man, I think he's got 1% body fat! read more

Sergio has been above and beyond what I expected when working with a personal trainer. A little bit about my history: I have been having knee problems from long distance running for over a year and notice that I need more than just rest to fix it. My chiropractor recommended I see Sergio to help improve my total body strength and stabilize my running form. I can't thank my chiropractor enough for his recommendation. Sergio makes it a priority to tailor all the workouts specific to my needs. Not only has Sergio introduce new exercise routines to strengthen my hamstrings, calves, gluts, and core muscles, he is also determined to find out the source of my knee problems. Currently my knee have improved significantly since working with Sergio and I look forward to making more improvements with every session. read more

I have been training with Sergio for a few months and its been a great mix of pleasure and pain. I have trained with many different trainers over the past few years. Sergio brings a nice balance to my workout regime as I also train old school body building and boxing. He is good at working with me while complimenting and enhancing my workouts with my other trainers. Sergio is extremely knowledgeable and pushes me to work on areas of weakness, despite my need for perfection and distain for not excelling at everything the first time around. His workouts are creative and never boring. He brings with him a balance of new training philosophy and old school tried and proven methods. Sergio brings a kickass attitude to every session read more

I reached out to Sergio last April to get in shape for my wedding in August. I went to a handful of trainers to try them out and see who I liked best. I have a lot of back problems, and I was immediately impressed with the way Sergio took note of this and really went out of his way to watch my back, movement, etc and protect it. But not only was he protecting it and deciding our work outs based on it, but he was also reading my body and looking into why certain things hurt it. A few months with him and my back was feeling stronger than ever. My dress was backless, so I really want to work on my arms & back so they would look great in the dress. On my wedding day, my photographer told me, "This may be a really weird thing to say, but you have a really sexy back and it looks great in all the photos." VICTORY! I literally watched my body transform the last few months. Everybody asked me what I did to get in shape for my wedding, and yes, I did work out like crazy. But working out with Sergio CHANGED my body shape, not just making it smaller. It is hands down the best thing I have ever done for myself, and I truly believe that getting a trainer is the best investment one can do for him or herself. I told Sergio what I wanted, and he made it happen. We would constantly check in and reevaluate and see if my goals were changing. He also takes measurements so you can have even more proof how much your body is changing. My husband is still amazed at how different my body shape is...he is super impressed! My sessions with Sergio are dwindling, and I am not sure what to do with myself! Do yourself a favor and get in the best shape of your life with Sergio. read more

Sergio is a great trainer! His Olympic lifting BodyFit sessions in the morning at Planet Granite is a different workout from all others. I love it! Can't get enough of it. Not only is Sergio a genius at creating these workouts, he's great at explaining how it relates to everyday life functional movements. He's also great at explaining the correct form and methods of the exercise, so I don't get hurt and maximizes the workout to the full potential. It's the best all around exercise regiment, it's helped my back, core, legs, and upper body strength, etc. etc etc. Thanks Sergio! read more

I decided to try out a trainer after years of working out with no change in results. I thought I'd just try it out for a month, but am totally hooked. Sergio started out by determining my level of fitness and each month challenges me with new and interesting exercises. He has focused on helping me correct my posture and change my body composition. I'm very pleased with my results so far...and I even look forward to taking my measurements! If you are looking for a trainer who knows his stuff and is very encouraging, Sergio is the trainer for you! read more

After my shoulder surgery I wasn't sure how to approach my personal health goals... I just didn't know where to start. After my shoulder surgery, I was very hesitant about going to the gym. So, after researching for a personal trainer I found Sergio Ruiz, and inquired about his program. Working with Sergio helped me a lot. As a trainer, Sergio understands what your goals are and uses his methods to get you there. In less than two months my shoulder is stronger and more flexible using kettlebells, I lost .5% body fat! and gained about 5.8 lbs of muscle! Not only is he knowledgeable in the gym, but he is also knowledgeable in meeting your nutritional needs. I am very impressed on the commitment he gives to you on reaching your goals. If your serious about reaching your goals Sergio Ruiz is the trainer to go to! read more

I've been training with Sergio for 3.5 months now and am amazed to see a more energized and healthier me. I previously worked with other trainers and hands down, Sergio is the man! He spices up each routine to allow for a variety of fun workouts that are outside the box of the average trainer's routine. There is never a dull moment and I look forward to the new things I will be doing each week. The workouts are challenging and leave me feeling accomplished and excited for more. The meal plan is realistic, easy to follow and allows you to eat normal, everyday foods. Sergio pushes me when I need to be pushed and promotes a "Yes I can" approach which has empowered me to do/try things that I normally shy away from. I was used to making excuses so that I wouldn't have to work out hard or was always worried about looking silly. This training experience has boosted my self confidence and has allowed me to adopt the "Yes I can" attitude. Sergio is professional and exudes passion for what he does. He goes the extra mile to ensure that you are getting the results you are looking for (i.e. check-ins, sends inspirational quotes/messages/ videos to keep you motivated and on track). Sergio truly cares about his clients well being and I am extremely happy with his knowledge and expertise and am proud of the progress that we've made (25 pounds so far) together as a team. read more

I am 54 years old, post menopausal, was 50 lbs overweight, & 4 months ago couldn't walk because of a broken (say shattered) foot. I got the "go ahead" from my doctor to start working out a month ago. I have lost 10 lbs and 13.25 total inches!!! Sergio is the best personal trainer there is. His knowledge is vast and he understands customizing workouts & diet plans for each individual. Every workout is varied & progresses toward more advanced levels. I am never bored & time never drags. His nutritional knowledge is cutting edge. How can nutrition be cutting edge, you ask-talk to Sergio. This man is living his passion and I am reaping the benefit. Check back in a few months and I'll update you on my progress. Thank you. read more

In the 9 months I have been working out with Sergio, I have obtained my workout goals and continued to see results. All the training we have been doing together has helped me feel stronger and I have noticed a huge difference this ski season with my endurance and I am not sore after a long day of skiing. He constantly mixes up our workouts and keeps it challenging and interesting. Sergio is the best! read more

I'm a National figure competitor and Sergio helped me with my diet and has showed me different intresting exercises to help improve my body for my upcoming National shows. He is very professional at what he does and always gives his 100% attention while training. I appreciate the respect and great attitude he has every time I meet with him. He always has such a positive and motivating attitude and always available and willing to help. Sergio truly puts his heart in this profession and I am lucky to have found him as a trainer. read more

I can't recommend Sergio and Body Matrix highly enough. I'm an avid runner, belong to Crunch, and have been doing some of their weight and spin classes for the past few years. For my birthday, I decided I wanted to make some serious changes in my workout routine, get in better overall shape, and, of course, look amazing for the summer season. I was stuck in my usual routine of tons of cardio and a few weights here and there, and not seeing the results I wanted to see, so my boyfriend suggested I look into a personal trainer. I had the usual fears--not wanting to look bulky, not loving weight lifting--but decided it was worth a shot to change things up. I asked around, and was referred to Sergio at Body Matrix by a good friend, and committed to 6 weeks of routine personal training workouts. I went into this not expecting much, and 6 weeks later I'm at 16% body fat, looking leaner and more toned than ever, lifting seriously heavy weights, and feeling stronger and happier than ever before. To say I'm a convert is a total understatement! Sergio was very motivating and inspiring, understanding my goals and worries from the start, and coaching me through every step of the way. I had a million questions about nutrition, types of workouts, and he knowledgeably addressed all my concerns with patience and promptness. I'll admit that I'm resistant to change and can be a bit neurotic, but having committed to 6 weeks and with nothing to lose, I dutifully followed Sergio's recommendations about limiting my running, only slightly changing my eating habits (he encourages cheat days!) and embracing lifting heavy weights (instead of the 7 lbs free weights I normally used), and I saw incredible results I never thought I could actually achieve. I couldn't be more impressed, satisfied and grateful for the training I've received so far, and definitely look forward to keeping it up! read more

Due to health reasons, I had to take a break on work-outs. Sergio has kept in touch and encouraged me to begin when I am able. Sergio cares about his clients and is an top example of a talented professional in the fitness business. Also, a strong member of the community, you can rely on his direction to get you where you're going. Just show up... He'll make you glad you did. read more

I had tried working out on my own and found I just didn't know what I was doing! After reading some of these same yelp reviews I had to find out if Sergio Ruiz is the real deal. After our first meeting I realized he is knowledgeable about fitness, nutrition and took pride in helping out others to reach their fitness goals. He set me up with a on-line meal diary and designed a personalized meal plan. He also emailed me an awesome grocery list of nutritious food. After working with Sergio you feel like you can do this, he is always positive and encouraging and will help you reach our goals! read more

Let me just start off by saying that Rachel Swan has been one AMAZING personal trainer that works wonders!!! I recently started working with her about one month and half ago to reach my 10 lbs. weight loss goal and already I have lost 7 POUNDS!!!! She is no joke, her workouts are tough but she keeps them fun and fresh with different routines every single time! After every session with her I feel my stomach tighter, my arms stronger, and my legs feel and look toned. Her unique combination of cardio, pilates, weight training, and drills just somehow works! I also take her monday nights booty camp classes as well as her abs class on wednesdays nights and both you come out sweating cannons of water! If you want a personal trainer that will give you your moneys worth, Rachel is your gal. =) read more