Lie on your back with your knees bent and feet flat on the floor.
Maintain a hips distance between your knees.
Tighten your buttock and abdominal muscles, and then lift your hips up off the floor until you have a straight line from your knees to your shoulders.
Keeping your pelvis level, straighten one knee, lifting your foot off the floor.
Hold this position as you steadily lower your hips back to the floor.
Repeat this movement, lifting up on two legs, and lowering on one.
