Sculpt sexy legs with this 15-minute routine designed for your fitness level. No running required! All you need is a sturdy chair and a phone book. Do 3 sets of each move.

Beginner Move 1
Chair Bump Squat

Targets: Hips, glutes, quads

Stand about 1 foot away from chair with your back facing the seat, knees slightly bent. Squat, keeping knees behind toes, and tap butt onto seat. Squeeze glutes to stand back up. Do 10 reps.

(Our athlete model, Muriel, loves running, swimming, cycling, and doing yoga.)