Dumbbell press and fly combo (chest):

This double-duty exercise keeps the pectoral muscles under tension throughout the movement. Position yourself for a regular dumbbell chest press. When your arms are fully extended, instead of dropping them back down to your chest, then slowly arc them out in a fly movement-without changing the position of your hands-until you get a nice stretch. Pause, return to the starting position and repeat.

Zero impact dumbbell row (back):

Stand with your knees somewhat bent and lean over slightly, keeping your back straight. Hold the dumbbells so they’re in front of your thighs (palms facing your legs). Your elbows should be slightly bent. Bring the dumbbells out, back and up behind you in an arc, swinging your elbows back like a pendulum but maintaining control of the weight, keeping your back straight. Focus on contracting the back muscles. Return to the starting position and repeat.

Reverse incline hammer curl (biceps):

Use fairly light weights for this one-it really isolates the bicep. Sit backwards on an incline bench adjusted to a 60- to 70-degree angle. With your arms hanging straight down, hold the dumbbells with your thumbs up, palms facing each other (hammer curl position). Curl the weights up until the just touch your shoulders. Squeeze, pause and repeat. If you pull your elbows back just a bit, it will put more emphasis on the long head of the biceps, which can otherwise be tough to train.

Wrong way tricep pullover (triceps):

Lie sideways (perpendicular) with your upper back on a flat bench as though you were going to do a dumbbell pullover for your chest. Grasping one dumbbell with both hands, bring your arms up and behind your head-again, as though you are going to do a dumbbell pullover. But instead of trying to keep your arms straight, stretch your arms back, maintain the upper arms in a fixed position and bend your elbows down, lowering the dumbbell and stretching the triceps. Pause, squeeze, return to the starting position and repeat.