It is a fact that as we age we prefer to go to bed earlier. There is a good evolutionary explanation for this. It makes sense that teenagers with better eye sig

It is a fact that as we age we prefer to go to bed earlier. There is a good evolutionary explanation for this. It makes sense that teenagers with better eye sight would stay up late to watch over the tribe / livestock at night, this predisposition for younger people to be night owls benefited the survival of the species.