Forearm Plank

Forearm Plank - works arms & tightens abdominals

Get into a push-up position.

With your weight on your forearms and toes, align your elbows on the floor under your shoulders.

Make a straight line from your head to your heels, then hold this position for 20 seconds while breathing gently.

Rest for 30 seconds by placing your knees on the floor.

Repeat 3 times, working your way up to a total of 6 reps.
 

(courtesy of Fitness Magazine)