Killer Butt-Shaping Moves From One of LA's Hot Trainers

"This move engages your glutes, inner legs, and core," Lalo told us. "It also works on your balance and coordination. Instead of pushing from the floor, we need to walk up, making the glutes and inner legs work extra hard."

• Take a large step with your right foot to the right side and lunge toward the floor; be sure to keep your knees aligned with your hips.
• While the core is engaged, push off through your right foot and raise your knee across and toward your elbow.
• Freeze for a second and do the same on the other side.
• Do 15 repetitions of this exercise on each side.