Side Bend Crunch Hold a weight in one hand. Place your other hand on your hip or out to the side for balance. (Here's how to choose the right weight.) Extend the weight above and over your head. Follow the motion by leaning your body slightly to the side of the arm without the weight. Bend your elbow to pull the weight down and to the side. Lift your knee upward to meet your elbow in a standing crunch. Lower your leg while extending the weight above your head. This counts as one rep. Complete 20 reps on each side. For an extra challenge, try the move with weights in both hands as pictured. Image Source: POPSUGAR Photography