HOW: Perform a jumping jack by jumping up and landing with your legs and arms spread wide. Next, jump into a narrow squat by bringing your legs in together lowering your body weight. Repeat. Stay light by remaining on your toes the entire time.
FEEL: You will feel the entire leg work with this exercise, primarily the quadriceps and the calves.
COMPENSATION: Avoid pausing in between each position, the transition is meant to be quick.