WATCH: MEN'S FITNESS Interview with HTGAWM's Billy Brown

Billy Brown is absolutely killing it on ABC's hit show How to Get Away with Murder (airing Thursday nights at 10pm ET). As Detective Nate Lahey, playing opposite Emmy winner Viola Davis, Billy's shown some serious acting chops—not to mention some serious six-pack abs. It's no surprise, then, that Billy is just as serious about fitness; but what may surprise you, is that unlike almost all Hollywood heavyweights, Billy doesn't have a trainer! In our video interview, the jacked actor zips through our two-minute drill: revealing his six-pack secrets, the most physically demanding role he's ever played, and more.