This dynamic exercise breaks the rules of traditional squatting by allowing your knees to bend out over your toes and lifting your heels off the floor, but it's still a very safe (and effective) way to target your lower body.
How to do it: Stand tall with your feet shoulder-width apart. Quickly lower your body into a squat as low as you can, lifting your heels off the floor and reaching your arms behind you. Press through the balls of your feet to return to standing as fast as you can. Your arms make a circular motion from the back to the front (reach them behind you as you squat down and bring them in front of you to stand up).
This one doubles as a card boost so try for up to 50 fast-paced reps.
