Circuit 3, Exercise 3: Rocket Jump Stand with your feet hip-distance apart. Bring your arms out in front of you with your hands together at chest height. Keeping weight in your heels, your back flat, and your core engaged, lower your hips and squat down so your thighs are parallel with the floor. Quickly push off the balls of your feet with power to raise up, jumping as high as you can. Land softly as you return to the squat position. This completes one rep. Perform 30 seconds of rocket jumps. Rest for one minute. Complete circuit three one more time, then rest for two minutes before starting the circuit four. Image Source: Priscilla Frederick-Loomis