Place a bench and bosu ball at approximately leg length apart from one another. Sit on the bench and extend your legs forward to rest on the bosu ball.
Eccentric contraction: Breathe in. Place your hands on either side of your hips and lift your hips up and forward, lowering your body towards the floor by flexing your arm at the elbow joint.
Hold your body above the floor for a few seconds.
Concentric contraction: Breathe out. Straighten your arm at the elbow and lift your body upwards until