Using a ball such as a tennis ball or similar, place your leg on the ball and gently move your leg around on the ball. It may hurt a little, but don't continue if it hurts more than a little discomfort. Also, do not put extra pressure other than the weight of your leg on the ball, we're not looking to bruise the skin. Move your leg around on the ball for a short tiome and then move the ball to a different spot and repeat.