How to do: Bicycle Crunches

1. Lie back into crunch position with your knees bent with your hands behind your head. Raise your head and lift your legs up slightly.

2. Slowly cross your right elbow to your left knee and alternate sides using one movement per breath. Remember to extend the leg you just tapped with your elbow out straight, bringing your opposite knee in closer.

3. Think about riding that bike, switch your knees in and out, extending your leg out straight above the ground. This is a great way to work the upper and lower abdominals, try not to use your arms to help you stay in that crunch.