if i sleep 5 hours below everyday what will happen to me in the future? Can it cause damage to my body?

You can grow very tired if you are not used to it at first. Later on in life your body should adapt to this change. I’ve read that even though we are told to sleep for 8-9 hours a day, those hours are meant to be separated through out the day. On the other hand, everyone’s body is different so it can vary between person. Hopefully this helps.