I trained with Gio for several years, and I can honestly say he is the best trainer I've ever worked with and worth every penny and then some. I came to him with what felt like a long list of limitations: a fused L4-L5 in my lower back, a bad left knee, a bad right shoulder, and chronic elbow pain. I truly thought these injuries would severely limit what I could safely do in the gym. Gio proved me completely wrong. Thanks to his extensive knowledge, attention to detail, and ability to train around injuries and not through them we built a program that was both safe and incredibly effective. Not only did I stay pain free, I achieved a full body transformation. He helped clean up my diet, dial in my training, and I finally packed on the lean muscle I had been chasing for years. What really sets Gio apart is that he doesn't just tell you what to do, he teaches you why and how to do it the right way. You walk away stronger, more confident, and actually educated about your own body. If you're dealing with injuries, think you're "limited," or just want real results from someone who genuinely cares about his clients and their success, Gio is 100% your guy. I can't recommend him highly enough. read more

Highly recommended, Mike helped me get into the best shape of my life. At 40 years old I found it much more difficult to remain lean, healthy and strong. Between the diet suggestions, difficult but safe workout plan and motivation I've been able to maintain my fitness level here at fifty years old. If you have a fitness goal Mike can definitely get you there. A++ read more

Mike is a great trainer! I was training with him 3x a week for some time & he got me into great shape! He's very smart & good at what he does. He doesn't just throw you into random workouts, he explains & educates you on why we are doing each movement, in order to reach your personal goals. I highly recommend him if you want an amazing transformation ! read more

Mike is an excellent knowledgeable trainer for all ages. I worked with him for many years. He showed me how you can maintain your fitness even with a busy schedule. I credit this strength training to helping me bounce back from some health challenges. read more

I've been training with Mike for over 3 years, and it's been one of the best decisions I've made for my health. Every workout is thoughtful, customized, and focused on real progress. I've gotten stronger, leaner, and more consistent, without feeling burned out or rushed through sessions. What really sets Mike apart is professionalism and care. Always on time, always prepared, and always paying attention to form, injuries, and long-term results. If you want a trainer who actually knows what they're doing and genuinely invests in your success, I highly recommend Mike. read more

He a great trainer and a wealth of knowledge. Started me out on a life of fitness. Not only training but nutrition also.

Working with Michael has been an incredible experience. He helped me lose weight, build confidence, and truly enjoy the process along the way. He knows exactly how to push you to achieve results without ever compromising your body. His knowledge of muscle building and sculpting is impressive, and every workout felt purposeful and tailored. Beyond the results, he is an absolute pleasure to work with, very motivating, professional, and supportive. I highly recommend him to anyone looking for real results who genuinely cares about your progress and well-being. read more

If you're looking to get a meal plan and achieve the best results, this is the only trainer I'd stick with. It'll be worth it.

No hype, simply the best! I will resume in 2026 because I know Gio will snap me back in shape!

Michael has been such a blessing to me... in more ways than I can list in a review. When I met him I was in a struggle with my overall appearance + physical health. I work in the food industry and often that leads to long hours, crazy schedules, no sleep and either eating bad or not eating at all. My endurance level was shot as was my strength (those are two things required in my field to be successful). He took me from being intimated by the gym to being in love with it. I saw results that I had seen with no one else. I respected him because of his own passion for health and for his clients. He keeps me in check if I fall short. He genuinely cares for my well-being and my success in the gym not to mention he is one of the nicest people I have ever met. I will never again so much as entertain the idea of another trainer. He has my business for this life and the next! Thank you again Gio! You really do know! #gioknows read more

I have known and worked out with Mike for about 5 years now and have to say that I am overly impressed with his skill, knowledge, dedication, self discipline, strength, attitude and more! All of these things he puts forth in his training and superb work ethic! He pushes me to work harder, have a greater self confidence and achieve the personal goals I set... More so than any other trainer I've had before. I've recently just had a baby 2 weeks ago and am counting the days until I get a doctors release and am able to start working out again!! Thanks Mike for being so awesome... See you soon! read more

This review is long overdue but I'm happy to finally get to it. My wife and I trained with Michael for several months and loved the education on fitness AND training that we were getting. We are not super star athletes or mega celebrities but don't think he won't treat you like one. He made us feel welcome and took time to know our strengths and weaknesses and built us up as we got faster, stronger, and healthier. Give him your commitment and see for yourself the amazing results he can get out of you! read more

Having been in the fitness industry for over 20+ years, I can state without hesitation that Michael Giovanni Rivera is one of the very best there is. Forget his numerous magazine features, television appearances, and celebrity clients, Mike lives and breathes fitness! A success story of his very own training principles, he delivers real results for real people read more

Out standing trainer and the gym and all the other trainers there are amazing but mike helped me reach my goals in losing me stomach fat so

Mike is a great guy to work hard for. Fortunate enough to train with him. Would recommend him to anyone serious about their strength & conditioning. If you need to get serious about a healthier lifestyle this would be a great path. In 90 days under Mike's training program I lost a total of 45lbs and 29 inchs overall. Never been stronger mentally or physically, great way to make big changes! read more

Great workout programs! His sessions are crushing too, always felt incredible when I left. Not to mention you can tell he truly cares about his clients and improving their lives. read more

Mike trains my husband and I and he is amazing. Not only does he push you but he keeps it's fun and versatile. One day I am doing ropes the other day boxing. I was nervous about doing weight training as I thought i would bulk up but I am leaner then ever before. Thank you mike!! read more

Great trainer !!! He is not only knows his stuff he also practices what he preaches !! Want results ?... Book him now !! read more

As a bikini competitor-I am used to a tough training and challenging workouts..but Mike takes it to a new level ...he not only wants you to succeed but he leaves you with no other option! His passion for nutrition and fitness is contagious! I'm grateful for his knowledge and overall dedication to this industry! Also one of the nicest guys I know-don't let the Tatt's intimidate you... read more

Hands down one of the most knowledgeable, focused, and humble fitness professionals in the OC. Not to mention he's just badass! Something said of being trained by someone who leads by example. Top notch...give Mike a call!! read more

By far the best trainer physically and mentally as you will find! Mike, I can't thank you enough for the solid support and structure behind your workouts. Couldn't ask for more! read more

Mike is one of the most dedicated professionals in the industry. He knows everything there is to know on how to get you results. From the physical training to meal plans he will customize a program just for you and you WILL see results! -R Morgan read more

I having been into fitness for over 45+ years; in the last 15 years I've spent most of those years running and cycling. But I didn't focus much on my upper body. Michael Giovanni Rivera was recommended by my professional athlete friends and family. Mike helped me build my upper body, he is the very best and in an elite field of professional trainers. Mike lives and breathes fitness, he uses training principles that delivers real life results. Thank you Mike! read more