Set-up: Begin lying flat on your back with plenty of free space around, and a kettlebell by your side.
Movement: Grasping the kettlebell in one hand, press it up and straighten your arm. Keeping your trunk stable, hook the leg of the arm holding the kettlebell out to your side, raise your torso, and place your free hand behind you on the ground to stabilize.
Repetitions: Perform half of the prescribed repetitions on one side, then the other.