Goodbye to jiggly arms

The overhead triceps extension, performed while seated and with a single dumbbell, is a safe and effective way to firm up and strengthen the backs of your upper arms -- without straining your lower back.

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1 Use both hands to hold the ends of a dumbbell. Sit on the front edge of a sturdy chair or bench. Place your feet flat on the floor, with your ankles below your knees. Tighten your abdominal muscles to support your back. Without completely straightening your arms, raise the dumbbell above your head.

2 Keeping your elbows raised and pointed forward, slowly bend your arms and lower the dumbbell behind your head. Pause for a moment, then slowly raise the dumbbell above your head. Do not try to lock your elbows straight. It is important to keep your arms close to your head; also keep your head, neck and back in a straight line.

-- Karen Voight