Men’s Fitness Magazine picks the “MF25,” which is the male celebrities with the hottest bodies.

Jake Gyllenhaal, 29, USA (Actor) For his lead role in the upcoming blockbuster, Prince of Persia: The Sands of Time, Jake Gyllenhaal had to undergo a dramatic physical transformation. The actor packed on the muscle by doing a combination of outdoor cardio interval workouts and power circuits in the gym.