Knee-Ups

1. Sit on the edge of a bench, grasping the sides of the bench with your hands, to maintain steady balance.

2. With your legs extended outward, slowly pull your knees into your chest, squeezing the abdominal muscles during the contraction. 

3. Hold this position for two seconds and then slowly extend your legs before repeating the motion.

The Work-Out: Do 2-3 sets of 15-25 repetitions.

Make sure to: Try to keep the rocking and bouncing at a minimum.