Muscle knots are highly irritated muscle fibers that have tightened into a ball in one area of your muscle. These painful, tender spots can feel sore and often occur in your upper back, shoulders, or ...

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 ...

Although muscle spasms are usually short lived and aren’t serious, they can be painful. Stretching can be particularly helpful at relieving a muscle spasm. Other home treatments like massage, using ...