Your deltoid is a large, triangle-shaped muscle that supports the movement and stability of the shoulder joint. This muscle covers the upper arm and forms the rounded contour of the shoulder.

Discover three simple yet effective exercises that reveal and strengthen overlooked muscle weaknesses. Learn how to improve ...

The findings indicate that bench press angle significantly affects muscle activation. For the pectoralis major, a flat bench ...

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 ...

This is why they usually work a joint in pairs. One muscle of the pair contracts to move the body part, the other muscle in the pair then contracts to return the body part back to the original ...

A “useless” muscle that allows some people to wiggle their ears actually activates when we strain to hear something. Our ape ancestors lost the ability to pivot their ears when they diverged ...