Crunches

1. Lie on your back with your knees bent and feet flat on the floor, hip-width apart and place your hands behind your head

2. Hold your elbows out to the side, tilt your chin slightly,

3. Engage your core muscles and curl up and forward so that your head, neck, and shoulder blades lift off the floor.

4. Hold for a moment at the top of the movement and then lower slowly back down.