
08/10/2025
Super Spine Stuff - Remember the saying, “Step on a crack, break your mother’s back”? Cracking your back generally won’t break it. The pop you hear when you stretch or twist isn’t made by your bones moving out of place – it’s actually caused by a process called cavitation. Our joints are cushioned by synovial fluid, which contains tiny amounts of dissolved gases like nitrogen and carbon dioxide. When you stretch, the joint capsule expands, reducing pressure inside the fluid. The gases then form a bubble and pop! As with most things, moderation is key. Cracking your back shouldn’t cause pain but if it does, it might be worth seeing your GP. But when it comes to avoiding cracks on the footpath… that’s still up to you!