Shoulder Press and Side Crunch Stand holding dumbbells at your shoulders. With your palms facing forward, press the weights overhead, straightening your arms. As you bend your elbows to lower the weights, lift your left knee up toward your left elbow. Squeeze your abs to exaggerate the side crunch. Lower your leg while raising the weights overhead, and repeat the side crunch on the right. This completes one rep. Image Source: POPSUGAR Photography / Kathryna Hancock