Dierks Bentley reveals in this month's special country music edition of PEOPLE magazine that he wasn't always the perfect kid. When the singer was 18, he set up a lemonade stand with a few friends -- and got caught spiking the lemonade with vodka!

"The cops told us we had to leave and were cool about it, but they came by again and we were plastered," Bentley explains. "We all went down to the little jail, but it was pretty harmless fun."

These days, Bentley sticks to beer. But he counter-acts those boozy calories with some hardcore workouts. He has made Men's Fitness magazine's annual list of the 25 Fittest Guys in America. Bentley, dubbed by the magazine as the "road warrier," says he finds a new gym in every city he visits.

"I've even worked out in church basements," he says.

Bentley joins athletes Tiger Woods and Brady Quinn on the 'Fittest Guys' list, alongside actors Will Smith and Daniel Craig, rapper Flo Rida and presidential candidate Barack Obama.