8 weird noises your body makes and what does it mean

Cracking
Changes are pressure- which can occur with movement- can cause gas bubbles to form within the fluid. When these bubbles implode or “pop” the sound associated with “cracking your knuckles” is produced. To physical therapists and chiropractors, this sound is known as a “cavitation”.Repeated joint popping can also be caused by conditions that represent more serious joint status, such as a cartilage tear from a torn meniscus or degenerated cartilage from arthritis (osteoarthritis). The most common joint to be associated with joint cracking is the knee joint.