Video: Explain the sound when breaking the knuckle joint

The sound of breaking the knuckle is the explosive sound of the air bubble to fill the gap created by the joints.

Breaking the knuckles stimulates the tendons, helps relax muscles.

When breaking the knuckles: The surface of the joints suddenly split off, creating a gap. Synovial fluid is not enough to fill this gap, so air bubbles are formed.

Air bubbles explode in the process of cracking and making a sound. The pressure at the joints is now released.

Breaking the knuckles stimulates the tendons, helps relax muscles. However, it weakens joints.