what IS balance fitness?



Personal Training Programs

Nutrition & Weight Loss

Health & Fitness Assessment

Mobility & Posture

POSE Running Efficiency Classes



Marc Keen
ACSM CPT, CrossFit L-1 Trainer, Spartan SGX, Reebok ONE Elite

Marc holds a BS degree from Pennsylvania State University and is a Certified Personal Trainer with the American College of Sports Medicine (ASCM), a CrossFit L-1 Trainer, a Spartan SGX Coach, and Reebok ONE Elite Trainer. With over 20 years experience in the fitness industry, Marc has created a unique style of training that helps clients to make clear and rapid progress towards their goals through holistic lifestyle changes, support, and accountibility.

Being a CrossFit Masters and competitive Spartan Race athlete himself, Marc is well-versed about sports injury prevention and rehabilitation, improving mobility, running form and efficiency, and sports nutrition. Training elements he favors include bodyweight training, gymnastics movements, weightlifting, and high-intensity interval running. Keeping up with the latest advancements in sports science and exercise physiology, Marc constantly refines protocols and seeks new and challenging ways to keep clients interested and having fun while working towards their goals.

Marc started Balance Fitness in 2014 in an effort to help bring western-style functional fitness training to Tokyo, which is still in its infancy. He is a well-known coach for Spartan Race Japan, the Tokyo CrossFit community, and was recently selected by Reebok as a ReebokONE Elite Trainer for his fitness running class series.



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