My 16 year old DS is constantly tired, to the point that he points it out to me. He says that he always feels tired and has no energy. He eve tries going to bed early (8pm) but then says he feels worse because he's overslept. Is this normal? I'm thinking maybe diet related, although he's always ate well and doesn't eat snacks/chocolate etc. He used to go to kick boxing but hasn't been for the last six months because of this change in hours at college. Can anyone shed any light on why this is? TYIA