Muscles worked: Lats, rhomboids, and traps

Why it rocks: This move will put your back muscles, which are often neglected but play a key role in supporting your posture, through the wringer, says Tang. Since the alternating exercise targets just one side of your body at a time, it can also help you pinpoint and correct muscle imbalances, which can potentially lead to injury if left unchecked.

How to:

1. Stand with feet hip-width apart and arms hanging at sides, holding a dumbbell in each hand, palms facing toward one another. Brace core, gaze forward, and bend knees slightly.
2. Hinge at hips until chest is nearly parallel with floor and back is flat, allowing straight arms to hang toward the floor.
3. Draw shoulders down and back and keep chest open as you slowly bend right elbow to pull the dumbbell up and back toward right hip. Keep right elbow tight next to body so biceps graze ribcage.
4. Pause, then slowly straighten right arm to return to the starting position. Repeat on the opposite side. That’s 1 rep. Continue alternating.