There are no excuses for skipping this 20-minute workout; it requires no equipment, so no matter where you are, you can fit in a sweat session. Quick and effective, today's workout in our Better-Body Challenge mixes classic cardio moves with bodyweight strength-training exercises to burn calories and build muscle. Print the workout, learn the moves below, and then get at it.CONTENT-Box Toe Touches,Frogger High Knees,Jumping Jacks,Lateral Bounding,Lateral Bunny Hop,Lunge Skip,Pilates Scissors,Push-Up and Rotate,Triceps Dips