Exercise of The Week - Barbell Preacher Curl with Stability Ball and Bench
Start: lie face-down on a stability ball placed on top of a flat bench, with legs on either side of the bench, feet on the floor, and the trunk and upper arm supported by the ball. Hold a barbell in two hands with palms facing up and the elbows as straight as possible.
Action: bring the barbell towards the shoulders by bending at the elbows.
End: lower the barbell back to starting position.