Starting position: Lie sideways on the floor with your left elbow bent and your left forearm supporting your body. Keep your body in a straight line and tighten your abdomen. Start by raising your right hand straight up, perpendicular to the ground.

Action essentials: Pass your right hand down under your body, twist your upper body in the direction of your hand and tighten your abdominal muscles, while keeping your lower body still. Then raise your arms back to the starting position. This is repeated once.

Tip: Keep the lower body still and only move the upper body