Mornings in Ptown

When I am awake enough to witness them, this is mostly how the morning in the hokiekids' room goes:

645am: Hokiegirl's eyes open slowly. She stretches. Suddenly, her eyes POP open. She is awake, and there is no turning back. She hangs out on her bed for a few minutes, rolling around and playing with various animals within reach.

700am: Hokiegirl climbs up to Hokieboy's bunk. Sensing her presence, he opens his eyes and growls, "Hokiegirl, get off my bed! I'm trying to sleep!" She ignores his demand, telling him instead that the sun is up and it is time to wake up.

Now, here the routine varies. Typically, Hokiegirl pesters Hokieboy with hooting noises that are exactly the right pitch to sink into my marrow in the other room. Some hollering usually ensues between them, with Hokieboy still trying to fight Hokiegirl off so he can sleep. Today, however, Hokiegirl quietly removed herself to her own bunk and played with a bear. Hokieboy apparently decided he was not interested in sleeping and played with a book. This morning there is singing instead of hooting coming from their room. This is a wonderful thing. It is beautiful.

My only question is, WHY do they do this kind of thing only when I am already awake and not on the days when I want to sleep in???