Is it normal to crack my back in classq

i don't understand why that would be weird?

The chairs in school are perfect for cracking ones back. I do it to it's normal.

You shouldn;t do that bea=cause like imshadeekc said it is really bad for your back so avoid doing it as much as possible

Cracking your back while your sitting in a chair means you have to twist around to create it to crack which Is actually very horrible for your spine. It breaks down the cartalidge inbetween the discs and can cause very painful back issues later on

Normal.

yeahh it's cool. I do it all the time