For the Squat Jumps, find an open area where you have room to jump up high. Start with your feet about shoulder width apart and squat down to about a 90 degree angle. Try to maintain a neutral spine by keeping your head and chest up high the entire time. Once, at the bottom, explode up so that your feet and body leave the ground. Try to land soft upon hitting the ground and then repeat the motion several more times.
This exercise focuses on the muscles in the legs and butt. The jumping and landing motions of the exercise cause all types of muscle fibers to be activated, creating a unique and full muscle contraction.