Strong Feet and Ankles
The feet are the foundation of dancing, and this exercise works them with a tennis ball or a massage ball. A tennis-ball-sized prop sits just above the ankle bones, and the muscles on the inside of the legs and feet do the work.
Squeeze the toes into the floor to pull up into the arches, then release. Rise to relevé without letting the ball move. Count it any way you like: four up, four down, or two and two.