First some background on me - I work a 9am-6pm job downtown then go home and work an additional 5 hours. I literally sit 90% of my day in front of a computer and the most mobile I get is walking from my office to my parking garage or out to get food at lunch. I am one of those people that has been promising myself I will lose those 10 pounds for the last 5 years and I HATE working out. I have owned a 24hour gym pass for 7 years and can't remember the last time I used it. So to say the least I wasn't really sparky about dedicating my Saturday to waking up at the crack of dawn to get my @ss Kicked. Irregardless, my boyfriend signed us up and I was dragged along. Danny and team Kicked my butt - not even joking about this one - I am still sore today and it's been two full days. But I got something back I haven't had in a long time, stamina. I have that extra energy I haven't had in a long time for the last two days. I don't find myself dozing at 6pm and reaching for that 3rd cup of coffee. As sick as it sounds, it works paying these guys to force you to push yourself, sometimes you're just so exhausted from pushing yourself to work for the boss that you stop pushing yourself to take care of your body. The regime is pretty intense, you get a little dirty (you're on the ground for some workouts) but you get a lot more out of working closely with these three trainers in on hour than you would three days in a gym by yourself. read more

I really love the way I feel after each class I attend. I bought a deal for 10 classes on Bloomspot to get myself back in shape before the big 3-0 birthday hit. I was a little nervous as I'd never done a boot camp class before but I read some reviews that said it was good no matter what your fitness level, so I thought this was a good place to start. I go to the Tuesday and Thursday classes when my schedule permits and I must say that while it still feels difficult to get myself across town to the Marina after work, I always feel so accomplished by the time Sergio says my favorite words of the work out, "ok let's stretch". Working out outdoors with the Golden Gate Bridge as your background does beat the gym and I feel that while Sergio is sensitive to different fitness levels, he also pushes me to go to where I think I'm capable and then a little more each time. I like the encouragement and flexibility to work at my own pace. I also really like how the group is paired off so that you work with a partner to complete specific workouts. It seems to make me want to push myself harder to help my partner and pull my weight. I would definitely recommend Sergio's classes to anyone looking to get a great workout. Don't be scared. read more

Sign up already!! This is my third boot camp (I like to mix it up), and by far gives me the best workout of the three. The combination of strength and cardio is perfect! I used to train with Sergio a couple of years ago, and when he and Justin started up this boot camp on Saturday mornings, I signed up without hesitation. I've done two other boot camps in the past few years, and this one has it all. With a smaller group, Justin and Sergio give everyone individual attention, and are consistently making sure you're doing the exercises correctly and pushing yourself. The morning starts out with some good warm up drills followed by an awesome workout with the kettle bells (if you've never used these, they're like cannonballs with handles). You move from the kettle bells to these massive ropes that look a lot easier than they are. Trust me, after working out with the ropes, your arms and legs will have that ache that lets you know you're getting a great workout. After the ropes, you move on to the medicine balls, the perfect way to take out all your weekly aggression. The medicine ball is followed by core exercises and then sha-bam, before you know it, the hour is up! If you're looking to shake up your routine, or just want a really great workout outside to keep you honest over the weekend, this is the place to be. read more

My boyfriend and I joined REACTT bootcamp about one year ago and we haven't stopped going since! If we can, we go four times a week. Sessions are offered 2 to 3 times per day on Mondays (PM), Tuesdays (AM/PM), Thursdays (AM/PM), and Saturdays (AM). Each day focuses on something different - abs&conditioning, kettlebells, Bulgarian bags, cross-training, ropes, etc. We enjoy the variety, yet know what to expect on each day. Sergio, Danny, and Rachel really work hard to keep things exciting, introduce us to more complex exercises as we progress, and most importantly, work us out hard. My boyfriend and I have both seen great results (weight loss, muscle gain and improved speed, strength, energy,etc.) from doing this bootcamp regularly (coupled with improved nutrition, of course). REACTT really has become part of our lives and we hate it when we have to miss sessions.. thanks for everything, REACTT Team!! read more

Honestly, I am SO glad I joined REACTT. Sergio is amazing as an instructor and supporter of my health goals. I found REACTT through some deal I had purchased a while back. I love being able to work out at Crissey Field where it's just damn nice to be out after being at work all day! I always feel like I got such a great and effective work out in each time. It's definitely not the same as when I go by myself to the gym! This class really pushes me and makes the hour worth it! The people I've met in the class are folks that I've kept in touch with. Everyone is super supportive and encouraging of everyone else. Classes are a good comfortable size (where I still get plenty of individual attention). Sergio really knows his stuff too. Him and his team are super cool and are open to all my questions I always have for them about strength, flexibility, diet, etc. (Yea, I'm known to talk their ear off sometimes). =P I'm not able to attend his classes anymore due to my work moving further away but I really wish I could still go. I really miss the class and hope to work with these guys again soon. I HIGHLY recommend this class to anyone at any skill level. You definitely won't regret it! read more

Owwww... 2 days after boot camp, and I'm still sore. I've been doing Insanity for 5+ months, running an average of 10 miles a week and light weights. I noticed my body wasn't transforming into an "athletic build" as I would like. I decided to kick it up a notch with a hard core boot camp class. I honestly went in thinking I would be able to handle what was coming.. It looked easy enough.. but by the time end of the class I felt my new-found muscles screaming at me. This is def different then your average run, your average trip to the gym, your average workout DVD. This will catapult you into a realm of new results and health goals. Again I did only take one class, so I will update my results along the way. (I wanted someone to take the class w/ me so I dragged my older brother with me. He enjoyed the class so much that he possibly will be bringing his GF in to join us) read more

Found these guys through townhog.com and decided to give it a go. Really enjoyed the two sessions I've done so far and looking forward to the next one. They focus on form AND intensity, where a lot of places just want to see you sweating no matter how sloppy you are about it. The exercise circuits they have you do are deceptive. They look very simple and easy but after a minute or so, you feel your muscles burning and your lungs craving as much air as you can give them. Both times I've gone it has been a mix of really advanced people with endless endurance, brand new people like me, and people who just want to get some good exercise in. The soreness in my glutes, hamstrings, and shoulders lets me know it works :). Also, parking at Crissy Field has been completely easy both times I've gone. I pretty much parked at the exercise area within about 50 feet. read more

I am so glad I made the investment in REACTT Boot Camp. My career demands that I be fit and healthy, which can be a challenge for me to maintain after the holidays. I always seem to be thrown off my fitness routine and this year was no exception. I need intense workouts, that are challenging and keep my mind engaged. I am happy to discover REACTT Boot Camp, provides me with the right combination to keep me motivated and driven to achieve my fitness goals. Working with trainer, Jennifer in the mornings at 6:30am have been great. She gives her morning work out routines with care and watches over her clients. She pays close attention to each of her clients' fitness levels and pushes everyone in just the right way, to help them reach their individual goals. Her morning workouts have just the right balance of cardio and core strengthening routines that are just to my liking, creating that lean and fit look I love. The weekend boot camp with Sergio and Danny are great as well, since it's just the right amount of strength training I need. I am very please with my investment in REACTT Boot Camp and I have been seeing physical results within the first month. I am a happy client! read more

Me and wife joined bootcamp earlier this year and absolutely loved it. The trainers are awesome and they ensure that you are paying attention to proper posture to avoid injury. The peer group is amazing and makes you push yourself in an encouraging way. Even though at the about half way in the workout you feel you are dying and can't do anything more but you actually complete the full hr! Btw, did I tell you that the classes are in crissy field (if weather permits) which is a great location - you get to see water and gg bridge & tourist stop to look at the group. Unfortunately we had to put our membership on hold (yes they are extremely helpful and accommodating) since my commute time have increase to 1.5hr but I will be back soon. If you are near the area make sure that you drop by! read more

Best 60 minute workout you are going to find in a group training environment. Sergio and Justin are unrelenting in their torture (workouts) and at the same time motivating and encouraging. Using kettlebells, dueling ropes, and large medicine balls I'm stronger and more total-body fit than I have ever been - and in about half the time. The routine progresses every week so your body never adapts. This is bad because it doesn't get easier, but great because you constantly see results. Isn't that what it is all about? Awesome outdoors location at Crissy Field and I had a great time working out with the other campers. Intense, hard work in a friendly environment. Definitely looking forward to the next session. read more

I cannot say enough about Justin and Sergio. Somehow they make working out a pleasant experience! :-) Their workouts are very well structured- it's clear they've spent a lot of time thinking about their clients and how to give them the best workout possible in an hour. They are also adept at tailoring their workouts to the individual, which is crucial in a group environment. Best of all, they are patient and nice (!!!) and can push without seeming pushy. Whether you're a beginner or a seasoned trainee, I guarantee that these two will challenge you. (and I think they have programs for kids too!) read more

You know that point before you vomit but when you personally think you can go no further... and then do... That is where these guys take you. With real skill and energy. They not only know their stuff physiologically so I avoid injury, but they are exceptional motivators.. without being militant assholes. Really cannot compliment enough - and they seem to specialize in only getting other great people working out. No prima-donnas and no hyper-aggressive and competitive jock idiots. Just a really good bunch of people pushing themselves hard. read more

Awesome workout. I've been wanting to get out of the gym rut and was looking for something motivating and fun to break up my routine. This boot camp is great, the instructors are super cool and the exercises are tough but interesting. These guys are champs! Keeps you outta trouble Friday nights 'cuz you have to be up so early but it's worth it. What a great way to start the weekend and in such a great part of town, right on the water. read more

I played sports in high school and continue to go to the gym now, but I have never participated in a boot camp or any kind of personal training program. Therefore, right off the bat I was nervous/hesitant. On top of that the equipment intimidated me. My inner thoughts: "Kettle balls. Ok I've seen those before, but Bulgarian bags (bulg bags)? What the heck are those?! Can I do this?! What was I thinking!? Crissy Field? Brrr. No, but can I really do this?" After taking advantage of an unlimited month I purchased on a deal website, I could not be happier. Seriously, I have never noticed so many changes in my body and mentality after participating in these classes. Sergio is a great instructor, you may underestimate yourself, but he's got your back with helpful pointers and a smile. Working out outdoors in a beautiful setting with good people, makes exercising that much more amazing and motivating! Do it, do it, do it! read more

It may be tough to motivate for a workout on a Saturday but it is SO worth it! Bored in the gym? I was... until Justin and Sergio started this bootcamp on Crissy Field. I haven't missed one yet! What I love about it is that my mind stays occupied and the time flies by. These guys are the real deal with solid knowledge. You don't need much, just the motivation to show up. They take it from there. Before I know it the hour is up and I feel sufficiently whooped to justify a bloody mary with brunch! read more

This boot camp is absolutely incredible! Word to the wise, it is intense so be prepared to feel amazing the third day after the workout. This course is all about getting the definition and the cuts that you have been trying to get! It is a fabulous experience. The instructors are very encouraging, will break it down to something not as demanding if you are new to the course (let's face it, we all love the personal attention) and it seems to be a really good group of people as well! Really fun! I highly recommend it to anyone that is looking for an extra little boost to their workout. Check out their website so you know what you will be signing up for. If you know ahead of time, you will think the world of this boot camp. Great job Sergio & Justin! Thank you! read more

I purchased a Groupon deal for this bootcamp as I wanted to mix up my work outs. Emailed using the contact information on the website asking about communication. I am Deaf and wanted to make sure that it would work out for everyone involved. My first email from Sergio at the end of October 2012 was great. He was excited and looked forward to working with me. He did ask (and I agreed) for me to come in for a 1:1 session to got through the routine before I started the bootcamp. I had an ASL interpreter ready. It was just a matter of finding a day and time that worked for both of us. Fast forward to January 2013. . .I still had not had my 1:1 with Sergio. Repeated emails to Sergio went unanswered for long periods of time. . .when he did finally respond, it was an apology and an excuse. In January 2013 he asked if I would be willing to work with another trainer other than him. Hello!?! I suggested this in one of my previous emails. Two more weeks went by after I responded in the affirmative. I finally sent an email saying I was nowhere closer to starting bootcamp than I was in October 2012. Asked for my money back. That took another month. In a customer service profession, timely response is essential! Especially when there are interested prospective customers ready and willing to go. It is clear to me that customer service is not a priority for Sergio and their existing schedule of personal training sessions take precedence over new clients. I am still so very disappointed in this lost opportunity. I was really looking forward to this. . .alas REACTT Boot Camp is just like any other boot camp business. They do not care about customer service or inclusion. read more

Missed my workout due to location change not communicated clearly. I've been to a lot of other bootcamps in SF and think this one could do better. read more

Fun and dynamic group training heavily based on crossfit. This is definitely different than your typical training; make sure to bring the intensity. Also the fact that it's outside group training makes it that much more fun. Definitely recommend! read more

I have never been a fan of boot camps, but this one is great! They will adjust to any exercise level, so don't be afraid! I've been working out with a trainer on/off for the last year, and this is a great supplement to my workout. These guys know what they're doing, and you'll get the best ass-kicking one hour workout you've ever had! Do it! read more

The bootcamp classes are great. Not overcrowded, great trainers, motivational, and you will feel and see results. They offer different types of classes on different days which is great to change up which muscles are used, and they switch the exercises each week for each class to make sure you're keeping your body moving forward. read more

I had a bad experience with them. I bought the boot camp offer after reading some of the reviews here on Yelp. I went to Crissy Field on August 4, 2012 for the boot camp I had signed up. No one was there. I emailed immediately and then send follow up emails without a response. Initially, I received an email when I asked a question about signing up. I thought they would be more responsive. I am pretty disappointed. I was looking forward to it. read more

Excellent work out in a beautiful location (Crissy Field, with a view of the Golden Gate Bridge and Alcatraz). Sergio and Justin are positive and motivating. The kettlebells, ropes and medicine balls are fun and challenging. It's a great way to spend an hour on Saturday morning. read more

Well worth the investment! I joined REACTT bootcamp 3 months after a serious car accident and Sergio was incredibly conscientious of working with my neck injury. He adjusted any exercises that would put any strain on my neck and watched my movements / form very closely. Needless to say I was starting at the bottom (fitness level = nearly 0) but I'm so glad I stuck with it. It's been nearly 5 weeks since my first class and I can't tell you how gratifying it feels to actually see progress in my endurance / strength. read more

I covet my Saturday mornings as much as the next person, so it takes a lot to get me up and moving early - especially for a Boot Camp! This is the real deal. Sergio has been my personal trainer for two plus years now and he knows what he is doing. When he started this up with Justin, I was intrigued. I have dropped in (drop ins are absolutely welcome) on four 8AM sessions. The group is small, friendly and totally fun to workout with. Both Justin and Sergio tailor the sessions to the fitness level of the group. You will warm-up, stretch, swing kettle bells, work ropes, handle medicine balls and work every possible muscle group in their well thought out training routines. Every weekend's workout is a progression from the last in each of the four week long programs. They keep an eye on everyone to ensure you are doing it right and having fun at the same time. Their smiles are infectious and the location is fantastic! The hour literally flies by. If you are looking for a great boot camp that will give you results and motivate you, this is it! read more

I have lost and gained so much with Reactt Bootcamp. I have lost inches, body fat, and a feeling of frustration at not feeling as strong as I want to be. I have gained increased muscle tone, muscle endurance, a whole new mix of workouts to vary my routine, increased knowledge on fitness and diet in general, and awesome friendships that are only born out of grunts induced by Bulgarian bag swings. The view doesn't stink either - Golden Gate Bridge and windblown kite surfers catching waves in the bay at sunset or climbing the Lyon street steps to claim your sweeping vista view reward. Yes - the workouts are tough but they are only as tough as you make them. The trainers serve up the drills and equipment, and you go for it. They modify for each person's goals or abilities, and are very attentive to proper form and injury prevention (I have bad knees and they help me control my tendency to over-do it). You can choose morning or evening, weekday or weekend sessions. In the past, I have brought friends with various levels of fitness - some who never work out and others who were former college Olympic weight lifters - and each of them had a great workout and experience. Honestly there is no need to feel intimidated by the group what so ever - these bootcamps offer a whole different vibe where everybody knows your name. To sum it all up: Bootcamps with Sergio or Jen are like personal training sessions, but with a bunch of other really cool people with various goals and abilities that are looking for a fun and challenging workout in a beautiful setting. I've lost track of how long I've been going, but with some consistency you will definitely start to notice a difference in your physique, performance, and outlook on working out. read more

My boyfriend and I were looking to change up our workout routine and bought a groupon for REACTT boot camp classes about a year ago. We were immediately addicted to it! We love it so much, we go several times a week. The trainers are fantastic, keep boot camp fun and make sure it's constantly changing. They will modify the workout if you need something easier or more challenging. I have gotten much stronger and feel great since joining REACTT - they will definitely help you to reach your fitness goals. I highly recommend giving this a try! read more

When I first got to San Francisco I realized I needed a better workout than just running. I'm not big on gyms and wanted to find something that would be a good mix of cardio and muscle building. Bootcamp seemed like a great fit for me so I found a groupon and it was to REACTT. I felt sort of like I hit the groupon jackpot and from then to now a year and half later I went to bootcamp every chance I got. When I first started going I couldn't do even one push up. But with the combo of body weight exercises, bulgarian bags and kettlebells I'm now able to pump out a quite a few push ups along with all over strength that I've never head. The Bulgarian bags and kettlebells were a great way to workout. And because a lot of the time you're focusing on learning and making sure you're doing the movement right, you're not as focused on your muscles asking for a break. Each class was different and it meant that I never got bored or knew what was coming next. It was the same for my muscles as well. I can honestly say that every morning after I did boot camp I woke up a little sore. There was no typical routine, just a focus for the day (bag or kettlebells). Sergio the instructor and owner of reactt is a huge reason I kept coming back. He was the one that kept every single workout interesting. He made sure every single person knew how to do a workout correctly and safely. And would always be quick to give you alternatives if you had an injury. He wasn't at all a yeller. He was somehow able to get you to push yourself with positive reinforcement and just a kind, caring attitude. I loved when the classes met outside on crissy field, as they do most of the year until it gets dark before 6. Getting to workout outside and with the Golden Gate Bridge as a backdrop was really nice. Finally, I loved getting to know the people who workout with Reactt. Even on my first day they were friendly, not at all judgmental and helpful and it stayed the same through my time there. Everyone supports each other, whether in a partner workout, or just moral support. I can't recommend REACTT enough. I got stronger, made new friends, and was never bored. read more

Best boot camp workout ever in San Francisco! Finally a boot camp with an instructor who is actually an ex marine! That makes this boot camp solid and legit. Justin, Sergio, and Danny are great positive motivators throughout the whole hour. The kettlebells, battle ropes, and medicine balls gives your body a overall functional workout, especially your core, rather than specific muscles. This is great because it teaches you how to move your body as a whole, which no other work out does. Not only are the instructors are great, the people you work out along side you are positive and non competitive. The whole group survive as a whole because we know what each other is going through and want each other to succeed. Great for beginners, intermediates, and advanced people. I had a huge back problem, and after talking with Sergio, Adolfo (chiropractor and muscle work guy who works on athletes problems), and Justin, they taught me some stretches exercises and fixed 95% percent of the problem and pain. WOW!!! still working on the exercise to get it to 100% gone. This boot camp is all about helping out the boot campers, mind body spirit !!!! Definitely a great experience every weekend a must do!!!! The bbq they host after a workout once in while are great also! read more

Even though working out isn't as fun as, say, drinking or eating, or drinking and eating, or just plain drinking, this bootcamp is a great way to start your Saturday mornings. Imagine... two fun, knowledgeable leaders (Justin and Sergio) that really care about you, a small group of friendly people, beautiful Crissy Field scenery, and plenty of free parking. The hour goes by really quickly, since Justin and Sergio mix it up with everything from kettle bells to ropes to medicine ball drills and more, and spare you from any extremely stupid cheesiness of normal bootcamp "drill instructors". All fitness levels are welcomed, as they customize each exercise to your needs and abilities. So, grab the dog and your water bottle, head to bootcamp, and rid yourself of the debauchery you experienced on Friday night... sweat it out Saturday morning and still get home in time to watch college football. And drink. read more

Sergio, Justin and Danny are the best trainers and motivators in San Francisco Bay Area. They will push you to limits of your abilities and help you meet your goals. The best attitude before, during and after the workouts and friendships. If you want to get into shape and not have to go to the gym for an enclosed workout, come out and try these guys out. Some of the most challenging physical exercises that your body will ever experience. read more

You want a great workout? Come here, these guys are the best and can test you to your max. Also, the difficulty is variable to the person's condition level so all I can say is try it out. I did, and I love it, plus the added fat loss is great read more

great bootcamp experience! i did the 10 class Groupon to check it out and it was pretty awesome. within the 10 sessions i could feel a significant increase in strength and overall felt better about myself. i did a couple of sessions with Sergio but most with Danny and they are both very good at correcting your stance and/or motions in a very approachable manner. the classes were challenging (and i'm fairly fit) and worth the money. the only reasons i haven't signed up as a regular goer is because it's too far away from home and it being outside is sort of an issue for me. i absolutely hate the cold/wind/dew on the grass. i would definitely recommend it to anybody who lives in the area and wants to push themselves to get results. read more

Coach Sergio knows how to definitely kick some rear end while keeping things fun and enjoyable! Time flies, I feel like I get a full work out, and I leave with a big smile across my face :-D Love all the core, I can do without the burpies :-) read more

I look forward to Justin and Sergio's torture every week. The group environment is fun and challenging. Sergio and Justin's styles work well together with each bringing their own expertise into the mix. They are motivating and knowledgeable. You get the benefit of two amazing trainers, a great view from Crissy Field and a fantastic workout. I have brought friends of all ages and physical ability to this boot camp, and have heard nothing but positive feedback. It is a great way to start your Saturday. read more

This is the first boot camp I've ever done and I'm really glad I decided to go with REACTT. The instructors are nice and the workout is challenging. I love that they offer Saturday classes. Thanks TownHog.com for the hookup! read more

This was a nice boot camp. I had bought a 10 pass class and unfortunately didn't realize that it had an expiration date on it, so I was only able to use 2 of my 10 classes. The two I went to were well organized and well done. read more

2 years after having a baby, all I did was walk the SF hills. After 2 weeks of REACTT Boot Camp I noticed the way my body was reshaping itself. After 8 weeks, my abs, arms and legs became nicely defined without bulk. These workouts push me just to that limit where I think I'm not going to make it and then - it's over. I've worked out my entire life and REACTT are challenging, always different (never boring) and the results are fantastic! read more

I've never done a boot camp before and honestly wasn't that psyched to be yelled at. But that is not what REACTT is all about. They push you to your limit for sure, but Sergio is always checking in with folks and adjusting the moves to make sure every is being pushed but not beyond their limit. I also love that many of the exercises are done in pairs, with you and your partner jointly responsible for finishing a task. Not wanting to let your partner down gives you that little extra motivation when you start to get tired and that little extra support when you need it! I bike and run a lot, and the core and upper body strength makes me better at both. This has been the perfect addition to my routine. read more

I started joining REACTT boot camp about 1.5 years ago. You get the most intense workout and time flies during class. You may hate some of the exercises while doing them, but at the end of the session, you feel great and proud that you stuck through it. The instructors are competent and nice. They keep a close eye on the form and are always there to give assistance. I started noticing major improvement in my endurance, strength and balance. I always look forward to attending each class. Highly recommended. read more