REVERSE CRUNCH
Lie flat on an exercise mat on the floor, then completely extend your legs and place your hands down, flat on the floor beside you. You must then keep your feet together. Then, bring your knees up to your chest until your thighs are 90 degrees to the floor and your calves are parallel to it, this is your starting position.
As you inhale, curve your hips up off the floor while bringing your knees closer to your chest, and then repeat until your knees are touching your chest, or as far as comfortable. Then, hold for one count before returning your legs to the starting position in a controlled manner, breathing as you go, and repeat.
