What is the principle of fascia gun

The fascia gun uses the mechanical principle of vibration, and transmits the vibration to the deep fascia muscles through the fascia gun to relax the fascia and reduce muscle tension. The so-called muscle tension is the degree of muscle tension when we are not moving. High-quality muscles should have strength, flexibility, and contraction and relaxation. And some people have high muscle tone, muscle relaxation is also tough, and the risk of injury is greater.