How is birth control doing this?

Question

I have a disease where my body does NOT produce hormones AT ALL so I"m on birth control pills to produce and maintain hormones in my body. Anyway since taking it, no matter how late I'd go to bed I'd wake up exactly 8 hours later. If I went to bed at 11 I'd wake up at 7.

Before the birth control pills(I'm 23 and been on it for two months now) no matter how early I went to bed, my body would not wake up until 12-16hours later(which made college and work impossible). No joke.

Why is that?

Answer 1

Your body only needs 8 hours of sleep at your age. You were oversleeping before, because you were lacking the hormones your body needed.  

Answer 2

now that your hormonal levels are normal, your body's internal clocks are on a more normal cycle, too. isn't that great?