Target Muscles: Triceps
Equipment: Stability Ball, Dumbbells
Start in a bent over position on the ball with your one hand and knee placed on top of the stability ball. Keep your back straight, your elbow high and your arm tucked tight to the body.
Starting at a 90 degree angle, fully extend your arm, contracting your bicep at the top of the extension.
Return the arm to the starting position and repeat action.