Oh hell na! Trey Songz proves why he is the R&B gawd with a sultry, sexy and sweaty new visual for his single "Na Na." Mariah's favorite collaborator brings the usual arsenal for the Gil Green-directed clip: rock hard abs (check), bevy of beautiful ladies including Rosa Acosta, celeb fitness guru Mankofit and WWE Divas' The Bella Twins (check, check and check, check), and a hook that's gonna stay embedded in your mental long after the song's done (check... oh na na). Need a reminder to turn that flab into summertime fine? Check out Trey's rigorous workout series below and stay tuned for Songbook's forthcoming album Trigga due June 30.