A trigger point, commonly called a muscle knot, is defined as a part of the muscle that is contracted and unable to relax. The theory states that during periods of continuous, low-intensity muscle contraction, such as when sitting for hours, the blood vessels in the muscle are constantly compressed, preventing certain parts of the muscle from receiving oxygen and potentially relaxing even after the physical exertion has ended [1]. A trigger point can become a source of muscular pain.
