Jillian Michaels' Extreme Shed & Shred

Two aero/tone interval workouts that combine weight-training with high-intensity cardio ... plus some martial arts and yoga. It's a smooth-flowing fusion that increases motivation while challenging your body in diverse ways. The first workout emphasizes fat-burning cardio; it features traditional body-sculpting routines. The second program is more toning-focused; it includes lots of multi-muscle and yoga-based exercises.

Bethenny's SkinnyGirl Workout

A straight-forward yoga workout led by New York yoga expert Mike McArdle. The program is divided into four segments so it's easy to choose a workout length to match your schedule. It primarily features classic yoga flexibility moves like Sun Salutations, Warriors and Chair Poses.