Watch the video below to see a demonstration of proper form and technique for the crunch exercise. You can also check out some more abs exercise videos or find exercises for other muscle groups.
Instructions for Crunch
To perform a set of crunch:
Lie supine on a mat with your knees bent, feet on the ground and
hands beside your ears. The trunk should be in a neutral position.
Concentric (Upward) Motion
Squeeze your abdominals to raise your chest and head
straight off the ground until your shoulder blades lose contact with the mat. It is important to breathe
normally and maintain a neutral lower back position throughout the entire movement.
Pause at the top position for a 1sec count while squeezing your
Eccentric (Lowering) Motion
Lower your chest and head back to the ground without
losing the neutral postion of your lower back. Remember to breathe normally throughout the entire
Repeat steps 1 through 4 until you have completed the desired number
of crunch repetitions before resting.
This completes one set of crunch.