Kettlebell Alternating Curl
Stand holding kettlebells by the handle at your sides, one in each hand, with a supinated (palms up) grip. Your elbows should be fully open and your upper arms at your sides. Now, maintaining your upright posture, flex the biceps of your right arm to curl the kettlebell upward toward your front delt — bend your elbow as much as possible without allowing it to flare outward. Squeeze your biceps hard at the top before slowly returning the kettlebell to the starting position, then repeat with the opposite arm. When one arm is curling, the other arm remains straight and at your side.