Why is my body so programmed?

Question

Its like my body is a living schedule! When I was on summer vacation I always went to sleep late for some reason and woke up really late like sometimes at 12:00 after noon! And this morning was back to school and I woke up at 8:00 automatically! Also on weekends I am hungry in the morning! On school days I am not hungry in the morning! At school and most public places I do not ever have to do number 2! But once I get home I dash to the restroom! Why is my body so wired like its own timer?

Answer 1

force of habit you've done it so many times your body is unconsciously giving you an internal clock

Answer 2

That happens to a lot of people. My body is trained like that.

Answer 3

I'm also like that but I don't usually wake up automatically for school.

Answer 4

You have trained it well. Congratulations :P