Muscles can develop restriction, or a trigger point (knot) due to prolonged periods of contraction from injury or overuse. The constant muscle contraction discourages blood supply to the knot, causing pain, immobility, and irritated nerves. During a dry needle therapy session, a needle is inserted into the knot. This alerts the brain to increase blood flow to the area, allowing for the delivery of nutrient filled and oxygenated blood supply to the area, which effectively resolves stiffness and movement impairment. The inflammatory response will break up the restriction allowing the body to absorb it through the lymphatic system and relieve pressure and pain on pinched nerves. It also stimulates the brain to release endorphins, which reduces pain and causes the immune system to activate for healing benefits.