The Perfect Three-in-One Workout DVD from Heather Rider.

Workout One: Step Inspirations, Warm-up (8 min.), Fantastic step moves and choreography that will inspire you every time you work out. (45 min.).

Workout Two: Power to the Third, Warm-up (6 min.), an interval workout combining medicine ball work and hi-low cardio training (35 min.)

Workout Three: Core/Lower Body Reshaping, Strengthen and reshape your abs, back, and lower body with core exercises (26 min.). Cool Down and Stretch (6 min.)

Heather is currently pursuing a Masters degree in psychology with a focus on eating disorders. She is a Reebok University Master Trainer, and certified by ACE, AFAA, NASM-CPT, ACSM.