What are crunches?

Answer by  alz (2329)

Crunches are very similar to situps, except you do not bring your upper body all the way up to a sitting position. You only "crunch" your stomach muscles enough to lift yourself about halfway up. This is actually better for you than situps, which is why most people do these when they work out.

Answer by  Tom57 (113)

Crunches are basically sit ups. However, in a crunch, you only raise your body up about 6 inches off the ground.