The shoulder muscles are responsible for maintaining the widest range of motion of any joint in your body. This flexibility is also what makes the shoulder prone to instability and injury.

Each shoulder has three separate muscles that, together, compose the deltoid muscle parts: Anterior deltoids. When you move your thumb inward, you use your anterior deltoids. You also use them ...

This video reviews the anatomy of the shoulder ... The biceps muscle supinates and flexes the forearm. Inflammation of the long head of the biceps can cause anterior shoulder pain.

The serratus anterior muscle inserts exactly at the front border of the scapula, or shoulder blade. The muscle has three sections: the superior, intermediate or medial, and the inferior.

Video: Anatomy and function of the serratus anterior SA is often called ... back up the arm and through the shoulder makes for great exercise of the SA muscle. Also, boxers are often quite lean ...

Before we get to what those super moves are, let's pause for a quick anatomy lesson ... there are three distinct muscles that make up the shoulder—the anterior, medial, and posterior deltoids ...

Repeat 2 to 3 sets of 10. “This move activates the serratus anterior muscles while improving shoulder strength and back stability,” Kom tells Bustle. - Start by facing a wall standing with ...

Focus on serratus anterior exercises. Picture a muscle that hugs the sides of your ribcage, running like an elegant current ...

and protraction of the shoulder muscles. It is key for boxers to work on their fitness and their serratus anterior, as by failing to do so they could suffer from serious back and shoulder pain.

What Is a Shoulder Press? The shoulder press is an upper-body-focused movement that allows you to increase your overhead strength. When done correctly, it can lead to a significant increase in ...