A member asked:

Sometimes when i'm sitting, i feel my back crack. it feels like some of my vertebrae shift slightly. is this normal and could it reduce height?

A doctor has provided 1 answer

Normal: Like cracking your knuckles, the spine has joints that can have friction that causes noise as they try to glide past each other. So long as not assiciated with pain (usually feels somewhat good!) you arent changing the overall position of the vertebrae.

Answered 12/24/2017

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Thank

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