I used to withstand  long hours awake at night without much sleep. Then, I would just sleep more hours later on to compensate the days and days without enough sleep.

But lately, I notice that my sleeping habits change.  I get too sleepy between 10 pm to 12 midnight.  Then if I don’t sleep right away and 12 midnight has passed, I will have a hard time getting sleep afterwards.  I think, that’s what we call the bedtime – the time to sleep.

Then, I get to have a headache later on, then my migraine triggers.