Crunches

Muscle Groups Worked:

Abdominals

How to Perform This Exericse:

1) Begin with your knees bent, lying on a mat

2) With your hands either beside your head, or your hands behind your head, flex your abs to bring your head upward and forward, but do not attempt to bring your body all the way up, only until you are incapable of flexing your abs any more.

Notes:

Keep a controlled movement, without using momentum to drive yourself up, and maintain a controlled release on the way down.