Deltoids: Comprising three heads – anterior, lateral ... Whether it’s achieving a certain arm circumference, improving muscle ...

Outward arm action in a jumping jack Rotator cuffs A group of stabilising muscles of the shoulder which helps to prevent dislocation and allows the shoulder to rotate the humerus around its own ...

In the fitness world, shoulders are more than just a muscle group—they’re a statement of strength, stability, and athletic ...

anterior, lateral and posterior, which are connected by a very thick tendon and are anchored into a V-shape. The deltoid muscle is primarily responsible for arm rotation, but it is also ...