Ok this is starting to bother me. While doing inverted sit ups, I have a vertebrae popping on me. Its in my lower back, and as I come up to perform the situp it goes "crack" like I was popping my back.
Its irritating, but honestly the only part I care about is what does it mean? Health issue wise. it only happens during this action. And when I bend back really hard I can remember which one it is even normally. Been this way for a long time. Worries me. BTW no insurance so really....screwed ATM
This part may or may not matter~When I was a wee lil kid, I remember being bent backwards in a 90 degree angle. And I was unable to walk for 10 minutes after.