What Is the Trapezius Muscle? Trapezius muscles are large, paired, triangular muscles in the back of your neck and upper back. They extend down your back, but they’re mostly involved in the movements ...

This article was reviewed by Craig Primack, MD, FACP, FAAP, FOMA. A muscle strain, or a pulled muscle, is among the most common injuries affecting people of all ages, particularly those engaging in ...

What is a Quadriceps Strain? The quadriceps, often shortened and referred to as the quads, are a group of muscles located on the front of the thigh. The quadriceps are actually four different muscles ...

A pulled muscle is an injury to your muscle fibers. Muscle fibers are the large cells that make up your muscles. Your muscles allow you to move when they contract and relax. Many people use the terms ...

A calf strain is an injury to the muscles of the back of the lower leg. These injuries are most often caused by minor tears of muscle fibers. Usually, the bulk of the muscle tissue remains intact.

Crushing chest pain radiating to your jaw or left arm? This isn’t just a bad day at the gym—this could be a heart attack. If you experience pain with shortness of breath, sweating, or nausea, it’s ...

The obliques are the muscles running down either side of the abdomen. Pain in these muscles often occurs due to a type of injury known as “side strain.” There are two sets of oblique muscles: external ...

Mild muscle strains can feel better in a few days, but severe ones might take months to heal. A pulled muscle heals in three ...