Custom Fit - San Francisco, California

Ryan Browne

James Coca with Custom Fit is an outstanding trainer who truly goes above and beyond. From the start, he took the time to listen to my needs and goals, running a thorough assessment to identify areas to focus on. He then designed a personalized program to meet my specific needs.

As someone new to weightlifting, I wanted to make sure I was going about it correctly, and James guided me every step of the way. He ensures I maintain proper form, explains the techniques and the theory behind them, and has given me the confidence to feel like I’m doing it right.

James consistently checks in to make sure I’m meeting my goals and adjusts my program as needed and to keep things fresh. He’s also given me actionable advice to maximize my progress outside of our sessions, which has been invaluable as a busy dad short on time.

The results speak for themselves—I've seen steady, consistent progress and couldn’t be more satisfied with the outcomes. On top of all that, James is a great guy to chat with, making every session enjoyable.

I can’t recommend James Coca highly enough to anyone looking to get serious about their fitness journey!

Custom Fit's facilities are also top notch and add to the positive experience, highly recommend.

Sabine Tricon

I’ve been training with James Coca for over a year and a half now, and I couldn’t be more impressed with his approach. I had never been to a gym before starting with him, but now I genuinely enjoy my sessions. James is calm, knowledgeable, and always prepares exercises tailored to my needs and my fitness level. Exercising with him has given me the confidence to try new activities on my own that I never thought I’d attempt. Thanks to his expertise, I’ve seen measurable changes in my body and made consistent progress. I highly recommend James to anyone looking for a professional, supportive trainer who helps you push your limits!

Fidel Sosa

If you're thinking of investing in your health, I highly recommend training with James Coca! I started training with James about 6 months ago and it's been an amazing experience. From the very outset, working with James has been an absolute pleasure - James personalizes every session to your training goals and to how your body is feeling. When I started training, I was looking for someone who could help me make consistent and steady progress starting from zero and James has been fantastic in that regard. He makes every session fun and worthwhile. S-tier trainer!

Allie Pedrotti

I was referred to CustomFit by a colleague and couldn't be more excited to continue my health + fitness journey with them!

I understand I am not an easy client since I've had multiple (6x!) knee surgeries and my trainer, James Cho, is hyperaware of how to modify, push, and sustain mobility across the board. He geeks out on exercise science (I love it; I studied it in undergrad so he keeps me honest!) and is unlike any trainer I have had given he is proving he really gets the human body and movement patterns. He is also mindful to correct my form and proactively setting me up for success if work/personal travel takes me away from the gym floor with virtual workout programming.

In addition, I am also starting to leverage both Tarah (RDN) and Brett (DPT) @ CustomFit and so thrilled that I have my very own 'wellness + medical team' to kickstart 2025!

sheri mitchell

Wesley Woo is an amazing trainer. His tips and corrections on form really helped me get to heavier weights faster and safely, which was my goal. He pushed me past where I thought I could go each time and that was a lesson that reached far beyond just strength training. Such great, positive coaching, but in his very chill Wesley way. He is so good, so knowledgeable, so on top of every little detail with form. I cannot recommend him highly enough.

Sockna Dice

Friendly and welcoming, with a nice mix of ages among the clientele. Some of the trainers work as gym employees, others are independent contractors with their own training business.

Brent Hong

I had a great experience working with James Coca at Custom Fit! He was my personal trainer for the past few months and I can say that I’ve learned so much about strength training within a fun, challenging environment. He tailored my program to my running training, which ultimately helped me to achieve a PR in the half marathon I ran recently! He educated me thoroughly on the different exercises I was doing (including form, what that exercise was targeting, etc.) which built my confidence when training on my own. I highly recommend James, especially if you’re looking to implement strength training to assist in other sports such as running! I always looked forward to my sessions and he was extremely accommodating when I wasn’t able to make certain training sessions.

Joshua Mayer

Great facilities and excellent trainers. I started coming to Custom Fit after tearing two discs in my lower back over two years ago. I began with solo training sessions for a year before my fiance starting joining me for partner sessions. The training regiments are “custom fit” to your needs, so in my two years there we have focused on core strength and lower back mobility while also getting in a full body workout. My current trainer Charles has been a true inspiration and i highly recommend him to anyone who thinks they lack the inner strength to overcome any physical adversity life has thrown at you.