HOW: Sit down with your feet directly below your knees. Drive the balls of your feet into the ground and raise your heels off the ground. Your knees should come up in the position while the balls of your feet remain in contact with...

HOW: Sit down with your foot directly below your knee. You will be performing this exercise with only one leg. Drive the balls of your feet into the ground and raise your heels off the ground. Your knees should come up in the position...

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