Each muscle and muscle group plays a role in supporting your shoulder and allowing the wide range of motion of your arms and shoulder. The large shoulder muscles are responsible for most of the ...

The quadriceps, or quads, are a group of four muscles on the front of the thigh. They are some of the largest and strongest muscles in the body. The quad muscles allow a person to stand ...

In one step alone, over 200 muscles are activated in order to move the body up and forward. As those steps pick up in pace, the greater and greater force ends up being generated onto the ground.

or the infrahyoid muscle group, and can result in speaking, chewing, and swallowing difficulties. This article explores the anatomy and functions of the sternothyroid and conditions that may ...

This relationship between your muscles refers to opposing muscle groups, working in tandem, and their function to control and assist all movement. The agonist is called a "primary mover" or the ...

But with so many body parts and muscle groups, it can be hard to know where to start. Workout programs usually aren’t labeled as “full-body” or “body part” routines, but we’ve all ...

Fitness pros tend to organize all of these into different muscle groups—think upper body, lower body, core, and legs. If you're training to improve your physique, it may feel impossible to ...

The paraspinal muscles, sometimes called the erector spinae, are three muscle groups that support your back. You use them every time you lean to one side, arch your back, bend forward, or twist ...