Scorching hot! Check out shirtless pics of Hollywood's sexiest leading men, including Chris Pratt, Josh Duhamel, Matt Bomer, Channing Tatum, and more. Plus, get their tips on fitness, diet, and more.
"Healthy living and fitness update," the Jonas Brothers singer captioned a shirtless selfie on Instagram in July 2013. "Post workout picture. #diabeticinshape #2.0."