Jason Segel
Source: Shape
The 37-year-old How I Met Your Mother star got into serious shape for one of his movies, Sex Tape, and clearly he got a hell of a lot of results! “I’ve just been living healthy, exercising, eating right—no more midnight pizzas,” he told Us Weekly. “This time when I take my shirt off, I’ve made a promise to myself, it doesn’t have to be funny.”