Jett’s Gym J Series is a HIIT and strength-based training session located at selected local gyms. The sessions are lead by a qualified trainer and last only 30 minutes. The classes have motivating music and TVs show a display of the exercises at each station. You rotate around each station. If you forget what to do - just ask the trainer, follow along on the digital screen … [Read more...] about Jett’s Gym J Series Review