Kettlebell One-Arm Punch Swing
Stand with your feet shoulder-width apart and hold a kettlebell in front of you with both hands. Push your glutes back and keep your back straight as you do a single swing between your legs with both hands, then at the apex of the swing release one hand and guide it back between your legs. Snap your hips forward to raise the kettlebell back to shoulder height and as it reaches the top, bend your elbow and pull it back toward your shoulder, then quickly extend your arm and go right back into the swing pattern. Complete all reps on one side, then switch.