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 ...

Add Yahoo as a preferred source to see more of our stories on Google. Chest pain can be disconcerting, but it’s important to remember that not all discomfort signals a serious health condition like a ...

A pulled muscle — also known as a muscle strain — occurs when a muscle stretches too much, which causes the muscle fibers or tendons to tear. Pulled muscles commonly occur in the lower back or ...

A muscle pull is a painful injury that occurs when a muscle tears due to excessive stretching. Accidents, overuse, or improper muscle function often cause muscle pulls. A pulled muscle often occurs ...

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 ...