J&M Fitness. JM Fitness. JM, owner of the JM Fitness gym club, breaks his leg while lifting a massive barbell to impress ladies. to rest at least two months, his wife replaces him as the club manager and unveils all his perverse schemings and shameful cheatings. Especially, she discovers that the famous duo-coach session is much more than just a private lesson between a trainer and a member. Her revenge will be hot!.