butt routine

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Using only 5 moves, this routine works all three of the major muscles in your glutes, so your behind gets shapelier, tighter and more lifted. "These are classic exercises that, when done consistently and with correct form, create real changes," says the trainer who came up with the workout, Bradley Seidenglanz, an instructor at Barry's Bootcamp (a studio known for its classes devoted solely to your butt and legs) in Sherman Oaks and Hollywood, California.

For each move, do 5 sets of 15 reps. For moves where you have one leg forward at a time, do 15 reps on one leg, then 15 on the other—that's one set. Repeat until you've done 5 sets.