Kellan Lutz is obviously in excellent physical shape. You dont need me to convince you of that. But one of my favorite things about this guy is that he flat out admits that he hates running and that he gets extremely bored at the gym. Now, that may not seem like a good thing, but it helps me prove an important point. Theres more than one way to get in great shape and its just as, if not more important, for you to find a workout that you actually enjoy doing so that youll stick with it. For Lutz, that means trading long boring runs for hiking and swimming laps. He's also been known to wear a heart-rate monitor when he's walking around the set, just as a little form of motivation to look at it and see how many calories he's burning through out the day. But it took a little more than that for Lutz to win the number one spot on Mens Healths best summer bodies list. To stay in shape between filming, Lutz starts every workout with 5 minutes of cardio followed by core work. Hell then do a few sets of full-body exercises, followed by simpler moves that target specific muscles. When Lutz is too exhausted to use perfect form, his long-time training buddy Rich McDonald has him back off - even if he doesnt want to. Its more important to do things right than to risk hurting himself. The benefits of a tough workout are as much mental as they are physical for Lutz. He said in a recent interview that fitness teaches him to channel his energy, and he knows that when something bad happens, all he needs to do is head to the gym and work it off. To find out how more celebrities stay in shape, check out other videos in this series.