Why does my back crack when I lay down?

Okay I crack my back and I am very flexible will this make me stiff?

Whats a good way to crack your back? My back kills and it really needs to be cracked!

Is cracking your back bad for you? I have scholosis and it eases my pain.

I have a stuffy nose. Would it be better to lie on my back, or my belly?

You know when you twist round on a chair to make your back go click click click and it feels like its good and you feel all r...

My back really hurts from the chairs at the hospital and I've tried everything I could think of to crack it and it just wont ...

Sometimes when lay down anywhere i get this pain in my back for a few seconds and then it relaxes again...& sometimes it's in...

My bback is killing me. But mainly my lower back is in pain when I walkk. Andd also when I'm laying down, or have been sittin...

Okay I work in a restraunt and I think I did something to my back while lifting a heavy tray, I mean my back hurts when im ju...

So my dad just put up a trampoline in our yard. Me and my sister were jumping on it yesterday. I did a twirl in the air and l...