As the season for bikinis, halters and back-baring dresses approaches, don't neglect your back when it comes to toning up. This workout uses the equipment you purchased for your home gym. Aim for three sets of 8 to 12 repetitions.

Dumbbell rows
Stand next to the bench and, bending forward from your hips, place one hand on the bench for support. Keep your belly button drawn toward your spine and your back and head almost parallel to the floor. Pick up a moderately heavy dumbbell (you should start to fatigue around the eighth repetition) in your free hand, dangling it down so that the dumbbell, too, is parallel to the floor. Retract your shoulder blade, bend your elbow and draw the weight up until your hand is touching your torso. (The motion is like starting a lawn mower, though not nearly as quick.) Slowly lower the weight back down. Repeat the first set of repetitions, then switch sides.

Tip: Remember to keep your back straight. You should feel this exercise primarily in your back, not your arms. If you feel it in your arms, you're not retracting your shoulder blade before you lift. To test yourself, try to squeeze your shoulder blades together in back as if pinching someone's finger between them. Got it? Now try it with just one shoulder blade.