The massage gun, also known as myofascial physiotherapy instrument, is used for high-frequency impact therapy on muscle. The principle is that the massage head delivers 2000-3000 times vibrations per minute on the muscle parts of the body. It helps the muscle tissue relax and recover to avoid connective tissue or fascia adhesion. The massage gun relieves the muscle aching and pain caused by exercise or fatigue. And it promotes blood circulation and reduces the risk of injury.