10 Things to Love About Jake

From his ultra-fit body to his keen mind, find out why the Brokeback star gets pulses racing. By Serena Kappes

2. HIS BODY

Gyllenhaal, 25, jokes that developing his ripped physique – for the Marine movie Jarhead – took little more than sleeping. "The day after I was cast, something happened, and I was huge," the actor says. But seriously: It's really thanks to a grueling regimen that included running and swimming. "Then we went to boot camp," he says.