Don Saladino is a fitness expert, celebrity trainer, and can appear on the cover of Muscle & Fitness magazine if you give him 4 weeks notice. We talk about what actual hiit training is, what an actual intermittent fast diet should look like, which wearable fitness trackers work (and which don't), why celebrities have to train harder than actual professional athletes, and why there really is no offseason when it's your job to take your shirt off.