Strength. flexibility. endurance.

performance + education


Meet Jon Merritt.


Jon grew up competing in karate, soccer, and long-distance running. "Sports taught me the need for strength, flexibility, endurance, dedication, focus, and - most importantly - how to keep a clear calm mind in an intense situation,” says Jon.

For his clients he combines nutrition and fitness data with rigorous full body workout plans to achieve dramatic results for those seeking peak performance or transformation towards their full potential.

Jon also helps clients develop mindfulness about their habits outside the gym. "Understanding food, including ingredients, cooking techniques, and nutrition is essential for educating and inspiring clients to eat healthier while making food taste great,” Jon notes. A passion for cooking combined with an ongoing deep study of nutrition brings a full-life approach to Jon's training.

Currently Jon teaches group fitness classes at Swing Kettlebell Gym, works with private clients and is a Co-Founder of Box N Cut a group fitness class for corporate wellness.

Training methods for clients include weight training, kettlebells, core development, boxing, kickboxing, mobility, flexibility and nutritional accountability and education.



(415) 724-5369



San Francisco, california


Sunday, Monday : closed

Tues-Fri: 5am - 4pm 

Saturday: 8am - 3pm

Additional hours available upon request


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Personal Trainer Certification: National Academy of Sports Medicine (NASM)

About the NASM Integrated Training Certification

According to the National Academy of Sports Medicine (NASM), integrated training is a reconditioning and rehabilitation program that can be used with any client to reach any goal by incorporating six forms of training: flexibility, cardio, core strength, balance, power and resistance training. The approach is a systematic way to enhance sports performance. Incorporating the six foundational fitness components into every training program improves all biomotor abilities, builds high levels of functional strength, increases neuromuscular efficiency, and powers dynamic flexibility.

Onnit Academy Kettlebell Certified

TRX Group Fitness Instructor Certification

“It is my pleasure and honor to be a personal trainer. I feel a strong connection to movement as it has played such a significant role in my own life. Seeing clients reach their potential through proper coaching and their own perseverance is exciting and rewarding.”
— Jon Merritt


My sessions with Jon completely transformed my approach to fitness/diet and given me a newfound confidence, both in the gym and outside of it. Our training sessions were challenging, fun, and highly informative. He provided a comprehensive approach to exercise, body mechanics, and nutrition-after every session I felt like I had a great work out and I learned something!”
— Anne S.
I’ve worked with a lot of trainers over the years, but Jon is by far the best I’ve met. He’s dedicated to his craft, direct, focused, incredibly knowledgeable, and is as much a wellness educator as he is a personal trainer... During the past four months, he’s kept me on a program that slowly and steadily ramped up without injuring me...One of the things I really appreciate about working with him is that he sometimes tells me to rest. I feel like a lot of trainers just want to push you for the sake of pushing you, and if you’re a motivated person you can easily push yourself past the point of safety. Jon doesn’t do that. He shows you the progression of each move, tests your capabilities, then builds from a safe place. That being said, he’s got a good sense for when you’re being lazy, and def pushes you when you need it.”
— Lydia D.
Jon is a fantastic trainer! He’s experienced and professional and genuinely cares about getting you to where you want to be. Jon made sure to understand my goals and my current fitness level to design the perfect workouts for me. His focus on form and doing exercises correctly is fantastic for staying strong and injury-free. He is also knowledgeable about nutrition and gives me great advice about my diet. I’ve been working out with Jon for a year and a half and have seen great results!”
— Laurel L.