With the burgeoning fitness scene and countless photogenic gyms about town, it seems more people are jumping on the #fitspo bandwagon to sculpt their best Baywatch body. No need to spend hours at the gym, either. High Intensity Interval Training (HIIT) is designed to give you the more gruelling workout in the least amount of time possible. Alternating intense anaerobic bursts with short recovery periods, you don’t need more than an hour. We went undercover to check out the trendiest HIIT gyms on our radar.