Trey Songz learns the meaning of getting physical. The R&B crooner shows off his toned physique along with some very aggressive gym bunnies in the sexy new video for 'Na Na.'

Directed by Gil Green and Trey himself, the black-and-white clip finds the buff singer boxing, lifting concrete blocks and stretching in an underground gym. The Lotus Position never looked this good.

'Na Na' is the single from Trey's forthcoming sixth studio album, 'Trigga.' He explained that the title comes from his nickname and alter-ego. “I’ma be having fun on the album,” the 29-year-old said. “There’s a lot of great records on there. I worked with a lot of great people and I’m still recording every day.”