Knee Ups:
Sit on the edge of a bench, grasping on the sides of the bench with your hands to maintain steady balance. With your legs extended outward, slowly pull your knees into your chest, squeezing the abdominal muscles during the contraction. Hold this position for two seconds and then slowly extend your legs before repeating the motion. Try to keep the rocking and bouncing at a minimum. Do 3 sets of 25 reps for this exercise.

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