Lie on your back with your legs bent and feet flat on the floor.
Your knees and feet should be hips distance apart.
Raise one leg off the floor.
With the other, raise your toes off the floor so that you are just resting on your heel.
Tighten your buttock and abdominal muscles as you lift your hips up into the air.
Ensure your hips remain level and that the side on your elevated leg does not drop down.
Control the movement as you lower back to the floor and repeat.
Ensure you remain on the heel of one foot throughout.