The Shena encourages external rotation of the arm at the shoulder joint when doing push-ups, i.e. it enforces correct posture and technique every-time reducing the stress on the glenohumeral joint.

Compared to Western push-ups where the hand position is often perpendicular to the floor and directly under the shoulders, the Shena  enables a more natural wrist alignment and enables a greater range of motion where the hands can travel below the 12th rib during the push-up.

The Shena shifts the centre of mass superiorly, enabling leveraging of the body-weight, making the push-ups more challenging and allows you to do push-ups on any surface.