The ankle circles help with flexibility of your ankles, this is important for walking and balance.
Sit upright with your back supported before straightening your leg to do the ankle circles.
Lift your leg up and begin making large slow circles with your foot in one direction for the required number of repetitions.
Switch legs and make circles with the other ankle in the same direction.
Switch legs again and reverse the direction of the movement, perform the required number of repetitions firstly with one ankle and then repeat with the other.
Try to stretch your ankle as much as you can as you feel the stretch in your ankle, foot, and in your lower leg.
