Cracking your knuckles is the pulling of bones apart and letting air bubbles in between.

Question

True

False

Answer 1

False. Cracking your knuckles is caused by the release of gas (primarily carbon dioxide) that is dissolved in the synovial fluid surrounding the joints. When you pull or stretch your fingers, the pressure in the joint changes, leading to the formation of gas bubbles that collapse or burst, creating the popping sound. It is not the pulling of bones apart.