gifts for dad

Effects of Carrying a bag on the Shoulder

Carrying a bag on the shoulder(even if its empty) requires constant isometric contraction of the elevators of the shoulder girdle, such as the upper trapezius, levator scapulae, and rhomboids. Use, leading to overuse, leading to abuse... A bag carried Cross-Shoulder does not require the scapular elevators to have to overwork! For your Health!