STARTING POSITION:
Lie on the floor face down and place your hands on a medicine ball while holding your torso up at arms length. Support your weight on your toes and hands. Keep the shoulders far from the ears retracting your shoulder blades. Contract your pelvic floor and core while keep your body straight. Keep the head facing the floor.
MOVEMENT:
Keeping the balance, move your right arm in front of you. Return to the starting position and repeat with the other arm.
TIPS: Don't move your hips during the movements.