YAAAAAWN!

Why is it that school makes you so tired? What is it about these bleak, white walls and dismal brick surfaces that makes me want to curl up in a blanket and catch some Zs? I know it's not because i don't like school because oddly enough, i do. All my classes are fun and the work isn't unbearable. So what is it about this place that makes me so tired?! i swear, this summer i worked from 7:30am to 4:00pm Monday through Friday and would come home not feeling as tired as i do spending my 7hrs at school wear i do no intense or labor related activity.
I wake up a little groggy after having my 5 to 9 hours of sleep, come to school and am fine...until third period. Math, the class i need to stay awake for the most is torture. It's as if the air has been polluted by some gaseous poison, stinging my eyes, their lids begging my brain to close them but i know i can't lest i fall behind on my work. And in drama, the easiest of my eight classes. I sit down in the comfy auditorium seats and drift in and out of sleep, only fully alert to read my lines, then back to La La Land.
The most curious part of this fiasco is that once i'm home, i'm not tired at all. I lie down for a quick power nap before work, yet sleep refuses to come. I don't know. Maybe it IS something in the air here at Apollo High School. Or maybe it's something in the text books, because i know i can't be the only one with this problem.