The Backstreet Boys—Nick Carter, Brian Littrell, AJ McLean, and Howie Dorough—have decided to commit to a vegetarian diet for their new tour. When asked how the group was preparing for the tour, Carter tells celebuzz.com, “I’ve been doing vocal rehearsals. We’ve all been coached. We’re also getting a lot of rest and have switched over to a vegetarian diet.” He also says in the interview that a veg diet helps him stay balanced. The tour, which includes both the Backstreet Boys and the equally famous boy band New Kids on the Block, as well as Glee star Matthew Morrison, begins May 25 in Rosemont, Ill.