Targets: calves, shins, butt and thighs
Stand with your feet shoulder-width apart. Without pitching your upper body forward, bend your knees about 45-degrees. Maintain this position as you rise up onto the balls of your feet and lower back down, moving only your ankles. Continue this movement for 30 seconds.
Variations: Angle your knees in or out to really target your inner/outer calf muscles.