I am just wondering something...what makes the popping sound when you crack your back or neck? And how many of you crack your back/neck?

hmmm. i was told the cracking noise was actually a gas being released. not THAT type of gas, just compressed air between the vertebrae.

i crack my back, neck and hips a lot. feels great. but i don't do anything jarring. a nice way to stretch and crack after a long day is to lie completely flat on a bare or lightly carpeted floor, raise your knees and keep bottom of feet glued to floor, then slowly move your lower pelvis toward the ceiling. even if you don't crack, this is a nice relaxing stretch that gives you energy.

I am a crack addict.

OK, I have a lot of stuff that cracks.  Neck, back, ankles, knees, knuckles.

I guess that's about it.

My neck is a veritable minefield of crackage. It just sounds like one huge long crack. Quite amusing way to freak girls out. .

My theory is that cracking must be good, since it doesnt happen again straight after you've done it.. (unless your doing something stupid like rolling your head... like a pepper grinder )