BAYFIT SF is founded by Bailey Liu, a NASM Certified Personal Trainer, Fitness Nutrition Specialist and Corrective Exercise Specialist. Bailey, a native San Franciscan, hopes to share his vision of health and fitness with his San Francisco community. His passion lies in calisthenics, a form of physical fitness utilizing your own body's weight. He is a member of SF Calisthenics and Killasthenics.

Brian Liu is a NASM Certified Personal Trainer who focuses on strength training through weightlifting and calisthenics. In addition to strength training knowledge, he was a former amateur mixed martial arts competitor with disciplines in Boxing, San Shou (Chinese kickboxing), All-American Wrestling, and Brazilian Jiujitsu with over 7 years of experience.