Has anyone heard of an internal clock? I'm not quite sure how to explain what it is, but a lot of people have them, me for one. No matter what time I go to bed, whether it be midnight or !0:00 pm, I always wake up at 7 in the morning (even though I sleep in during summer
(I force myself to go back to sleep)). My grandparents are the same way. I think it's when you have to get up at a certain time, after awhile, you get used to getting up at that time and just wake up, without a clock. Maybe Merry was someone with an internal clock?