One of the best trainers in the business. I've been with Masi for more than 3+ years. I have gained alot of knowledge under his wings. I'm stronger, leaner, and in the best shape of my life. All props to him his training and nutrition are always on point. read more

Working with Masi has completely changed how I understand food and training. I was eating very low calories and had developed a real fear around carbs, which left me feeling exhausted and stuck. Masi helped me learn how to properly fuel my body instead of constantly restricting. His strength training guidance has been equally impactful. I feel noticeably stronger, more confident in my workouts, and more capable overall. My energy and recovery have improved, and training finally feels productive rather than draining. Masi's approach is thoughtful, personalized, and sustainable--not extreme or one-size-fits-all. If you're under-fueling, afraid of food, or want to feel stronger while building healthy habits, I highly recommend working with him. read more

Training with Masi for the past 6 months has been a game changer. Professional, knowledgeable about both physical exercises and nutrition , and truly committed to results. Every session is purposeful and challenging, and the progress speaks for itself. Highly recommend to anyone serious about their fitness. read more

Training with Masi has been truly life‑changing. As a former bodybuilder, his knowledge of the body and nutrition is unmatched -- and it shows in the results. He has helped me improve my mobility and flexibility to the point where I can walk up stairs without holding the rail, something I never imagined would feel this easy again. Strength training has been amazing; Loving the "lifts" and getting stronger every day. I am proud of my progress. His guidance, encouragement, and expertise have made all the difference. I couldn't ask for a better trainer. Highly recommend if you are looking for a professional trainer. read more

I was looking for a solid coach for some time and had a hard time finding one until my brother introduced me to Coach Masi! He sent me an invite to setup a call and talk about the whole process. After talking to him on the first call I knew I found the right coach and felt very comfortable to sign up for his program. I just finished my 2 month's program with him. I am extremely happy with my choice, he was very professional, always there when I needed him and very caring. If you're looking for a solid coach that is knowledgeable and can help you with your fitness and diet needs talk to Coach Masi! You won't regret it! read more

Mask has been transformative in my health. During the pandemic I realized I needed to do something. Classic dad bid. Desire for better, yet lacking the self motivation. Masi spent time talking to me about my overall goals. He developed a plan that started small based on where my fitness level was. Think 5 knee push-ups. Now I can do 20 standard push ups. We talked about diet, and again made very small changes. All of this in a virtual environment. We've never met in person (yet). You can trust Masi to meet you where you are physically and mentally. He's simply just awesome, and fun. read more

Working out and maintaining a clean diet has always been super difficult for me and coach Masi completely did a 180 on me. He is compassionate and super supportive throughout the process. He loves what he does and it shines through! read more

Finding a good gym is tough! Upright fitness has allowed me to reach my fitness goals in a fun and sustainable way. Masi has been such a great mentor through my fitness journey and his knowledge and compassion helps me to know that I am in the right place. The community I have built not only holds me accountable, but has allowed me to make some great friends along the way! read more

Thanks to Masi I was able to finally get back in shape. He's been the best coach I've worked with and I can't thank him enough for everything he's done for me. If you're struggling losing weight I would highly suggest hiring him! read more

Mazi is the best trainer I have work with! He helps me keep motivated and his under on my needs that I am going through. I recommend more than infinity times this business ! read more

Masi helped me work out a diet plan and showed me how to count macros. We worked together for several months and with his help I reached my goal weight. I highly recommend Upright Fitness!! read more

I started Upright Fitness a few months ago. I've got to say I have never felt better!! This is a whole new way of working out for me and I am thriving!! The trainers at Upright are professional, positive, and so willing to share their knowledge with their clients. All of the trainers are excellent so every workout is a great workout. I train at Upright three days a week with Masi and love every workout!! BTW I'm 72 yrs young and I'm progressing for the better at every session!! It's a lifestyle!! read more

Masi is a very knowledgeable and effective trainer. He put me on a nutrition plan and prescribed workout regimen. I started feeling and looking better after a few weeks. Very motivating to have a trainer that practices what he preaches and shows results read more

I literally hate going to the gym because I HATE exercising. Thanks to training with Masi, however, I actually look forward to and enjoy working out. Sessions with Masi are challenging but he's so easy to talk to that I have fun and I feel so great afterwards! He's very knowledgeable and informative on both physical exercise and on nutrition/diet, so he's a great resource for overall guidance for a healthier lifestyle and he even provides custom plans. I highly recommend Upright Fitness, especially to those who are having a difficult time committing to exercising regularly! read more

I started with Upright Fitness a few months ago, and I couldn't be happier with the results I got. Before going to Masi, I thought that starving myself and keeping carbs away would be the way to lose weight, but he showed me a much healthier and happier way to do so. He also kept me accountable every day, and made sure I was doing what I needed to do. Highly recommended! read more

Great coach who has real-world, myth-busting knowledge. Masi put together a meal and workout plan that for my hectic work schedule and role as a new dad. It's been 2.5 months and I'm down 16lbs. Masi is easy to talk to, available, and breaks things down clearly. Highly recommend! read more

I was one of Masi's very first clients and I must say I am very proud of how his mastering his craft. Although I was only able to workout with him for a summer, it was a great time. He was extremely supportive and passionate about helping me get healthy and happy. He is professional, attentive to detail like body mechanics and easy to talk with. I definetly recommend Masi as a personal trainer. read more

Masi is the best trainer! He is extremely passionate and it rubs off on me a lot. Masi is the best because he has so much knowledge about fitness AND diet! His tips and workouts have been helping me a lot and he made me fall in love with being healthy. read more

Upright Fitness is awesome! Masi has been my personal trainer for the past 2 months. I've had other personal trainers and I can honestly say Masi is the first trainer that I'm seeing results with. He has in depth knowledge of bodybuilding, nutrition and fitness. Plus, he's undergone an amazing transformation himself so he definitely knows what he's doing! I have no hesitation in highly recommending him as a personal or online trainer. Definitely give him a call as you won't regret it! read more

The best coach in the business!! I have been working with Masi for a couple months now and I can honestly say nobody goes as much in detail with nutrition, meal plan, and workout routine as much as he does. He will give you that one on one attention you need and keep you accountable through his fitness app which will have you log your meals and workouts in everyday. He checks in every week to make sure you are on the right track to reach your goals. Stop waiting and book the best in the bay now!! read more

Professionals in the field of health and body. I hired Masi to support me with my struggles with weight loss and he provided me with personalized education, accountability and a roadmap to not only shed the weight but to feel excited along the way. He really cares about the work and is skilled on top of being passionate. Power Combo!!! Highly recommend! read more

I've been working with Masi on and off for about 5 years, I did his online coaching, he has a follow along app for the gym/at home workouts, it also tracks all your workouts, and tracks your food as well and it also logs all your progress. Mask is very informative about weight loss and muscle gains. I learned so much while working with him. He checks in with you every week to see what is and what isn't working for you and adjusts your program accordingly. I always recommend Masi to anyone who is struggling to lose weight and needs some guidance. He deserves more than 5 stars! read more

As 72 year man, I needed help learning how to use the right equipment at my health club. I needed a real Professional Trainer. I made contact with Massi at Upright Fitness. That's one of the best things I have ever done for myself. I chose Massi because he Is Highly Skilled, patient, flexible, and he knows how to get you into the Perfect program that is just right to help meet your Strenght and Exercise needs. The best part about Masi is that he is one of the nicest persons I have ever known.!!! read more

Masi is a great trainer! He listens to you and makes a tailored workout plan and diet based on your needs and goals! But not only that, he is also very nice and accommodating! He makes you feel comfortable and motivated working out! I very much enjoy having him as my personal trainer and absolutely recommend him! read more

This program by far has been my favorite. In the beginning I struggled with going to the gym, dieting and nothing ever to seemed to really work. With this program, Lety and Masi tweeked my work out and diet to fit my body type and current lifestyle (mom/wife who works full time) I lost weight, saw great results and feel more energized. Love it! read more

I have had great experience with Masi. He has tremendous fitness knowledge and he applies it well with his clients. I have definitely struggled with staying motivated over the years and he has helped me get over that hurdle. He has helped me make fitness a lifestyle instead of it being a chore. Very happy with the service he has provided. Worth every penny! read more

Masi's a great trainer - Knowledgeable, personable, and helpful. He is very responsive whenever I have questions and put me on a tailored nutrition plan to help me meet my fitness goals. I would recommend him to anyone wanting to take their fitness goals to the next level. read more

I needed to get back in shape after having a baby and chose Upright Fitness because Masi, the trainer, is right in Tracy and had great prices. Masi is super friendly and incredibly knowledgeable about weight lifting, nutrition and health! I had never lifted weights before but he trained me on all the proper techniques and helped me get in much better shape. My body looked much more toned and it even gave me the courage to try group classes at my regular gym. Masi will come to your house or you can go to him. He also does a diet plan for you. I felt like he was a true partner on my journey back to fitness and would definitely recommend him to anyone looking to improve their overall health! read more