Start standing with feet just wider than hips. Hold a kettlebell in your right hand while keeping your right arm bent with your elbow close to body, so that the weight rests on the shoulder, and place your left hand on your left hip. Sink hips slightly into a quarter-squat. Then, quickly push through feet to extend legs, simultaneously pressing kettlebell straight up until right arm is completely extended overhead. With control, lower kettlebell back down. Switch halfway through.