I crack my back almost everyday, mostly because in school I sit so much and it ends up hurting. The chairs are awfully stiff and are attached to the desk, which means that you can't pull the chair in/out, so you have to lean forward to write or whatever (which makes it worse!). (My dad thinks it's because I don't sit correctly but I don't know...) Usually if I lean back and push on the desk it cracks the top of my back. Is this really weird? I know people crack their back, but not all the time like me & I fear it will cause me back problems in the future.