I have noticed that whenever I am doing my homework, reading or writing I bend my spine and I look like I have a thousand humps. I don't know why do I do that I just instinctively lower my head and bend my spine towards my notebook so my face is almost immersed into my notebook. I don't know I do it whenever I write or study, do my homework etc. I don't know what should I do. Do you have any advice?