The actor worked with fitness trainer Patrick Murphy four to five times a week for four to six months to prepare for ‘Baywatch,’ while following a strict, clean diet that entailed giving up sugars and carbs completely for days on end.

"Patrick's training was confusing at first...I just thought I was showing up to lift weights and get a deeper six pack (which is hard enough already)," Zac said. "But rather than the typical bodybuilding type of movements I had become accustomed to, Patrick pushed me to my ‘functional' limits with a very multifaceted style: strength, explosiveness, fast paced, calculated, diverse and gut-wrenching workouts. It was fun…you never know what he's going to throw at you the next day."

But which workouts did the actor not enjoy so much? Group circuits with power moves. What exactly does this entail? Something like "20 alternating jump lunges in one place, 20 jump squats, 60 mountain climbers, power pushups, followed by a run up five flights of stairs, then one-leg squat hops using a TRX rope," explained the trainer.

Rest…for one minute. Then he would have to do the circuits again…twice. "That's more than 1,000 repetitions on the body," he added. To prevent fitness plateau, the trainer would switch up the routine to push the actor harder.

To recap, in order to get Zac Efron-status fit, we need to work out three times a day, change up our workouts, listen to our body, correct our form and eat a whole-foods-form diet. Easy.