Why does our mind turn alert at 12 at night?!

Question: uh.. i usually get very very sleepy at 11 sth then when its around 12 sth.. i get very awake and cant sleep till around 1 sth.. maybe 2? why does this happen?

---

---

Answers: uh.. i usually get very very sleepy at 11 sth then when its around 12 sth.. i get very awake and cant sleep till around 1 sth.. maybe 2? why does this happen?

---

---

Google "basic rest activity cycle"
Your brain runs on one....

http://books.google.com/books?id=c25eErZ...

---

---

Maybe because its midnight.
Scary things happen you know.

---

---

---

---