How to do Crunches

Abs Exercise Training Workout

Lie down on the floor on your back, with both hands either behind your head or crossed over your chest and legs up on a bench so your hamstrings are perpendicular with the floor. Forcefully crunch your body up so that your elbows touch your thighs. Hold it there for a brief moment and squeeze the abdominals to maximize blood flow. Slowly come back down to the original position just before your upper back touches the ground and repeat.