Tones: shoulders and triceps (those jiggly underarms)
Stand with your feet shoulder-width apart. Hold a dumbbell in each hand at shoulder level with your palms facing your body. Slowly push the dumbbells overhead, rotating your elbows out and your palms away from your body; touch the dumbbells together at the top. Bring your arms back to the starting position.
Keep your shoulders down, and don't arch your back. Be sure that you don't lock your elbows at the top of this move.
Stand with your feet shoulder-width apart, holding dumbbells at your sides with your palms facing in. Bend your arms and slowly lift the dumbbells until your palms are shoulder high. Squeeze your biceps and hold for 2 seconds, then slowly return to the starting position. Be sure that your palms face each other as you lift and lower.
Keep your elbows firmly at your sides throughout the move.
Add swimming or the rowing machine to your regular cardio routine twice a week. These exercises work your arm muscles and give you a cardio workout to help get rid of fat. In 10 minutes, a 135-pound woman will burn 100 calories swimming and 80 to 90 on the rowing machine.
LOOK GREAT IN 60 SECONDS
Do 10 push-ups right before you slip into a dress, and your arms will look more toned. "It's what bodybuilders do before a big show," says personal trainer Schoenfeld. "It increases blood flow to the area, which creates a pumped-up look. The effect lasts for about an hour."