Lie on your back with your legs in the air. Place your fingers either under your lower back or on the crest of your hips. While maintaining a steady and controlled abdominal contraction, lower one leg down towards the floor. Return the leg to the start position and repeat with the opposite leg. Breathe normally throughout the exercise and focus on slow and controlled movements. The primary challenge of the exercise is to use the deep abdominal muscles to lock the hips in position and prevent the back from arching as you lower the leg to the floor.
