Mar 16, 2015
Lie on your back with heels and calves on a stability ball, arms by your sides. Press shoulder blades into floor and lift hips so body forms a straight line from shoulders to heels. Tighten core and slowly drag both heels in toward butt, bending knees and keeping body lifted.
Without dropping hips, slowly extend both legs back to previous position. Do 3 sets of 15 reps.
Why it’s better than a squat: It challenges your core more than a squat does, plus sculpts and defines the same muscles without the impact on your knees.