Deltoid Abduction of the shoulder (moving the arm outwards and away from the body) Outward arm action in a jumping jack Rotator cuffs A group of stabilising muscles of the shoulder which helps to ...

The shoulder is made up of several muscles including the deltoids, trapezius, rotator cuff, rhomboids, and serratus anterior.

Discover three powerful shoulder-toning exercises that require just a pair of dumbbells, perfect for creating defined shoulders that look amazing in your outfit ...