1. Quadruped Bent-Knee Hip Extension – Say what? It sounds more complicated than it is, and, awesomely, it can be done anywhere with no equipment. On your hands and knees, keep a straight, strong back and lift and extend one leg at a time, moving only at the hip and using your glutes to press your lifted foot up to the ceiling.
2. Forward Lunge – Basic, yet powerful. Add a weight to amp up the intensity of this move.
3. Step-ups – According to ACE, a 12-15″ step or box plus a pair of dumbbells equals a killer butt workout.