medico on Instagram: "Neck cracking (crepitus) is the popping/grinding sound from cervical facet joints, often from gas bubbles (cavitation) releasing or ligaments/tendons snapping, usually harmless if painless, but can signal issues like arthritis or injury if painful, potentially requiring a doctor's advice for safe relief via gentle stretches . While it can feel relieving, excessive or forceful cracking might strain tissues or injure vessels, so gentle movements or professional guidance is re