why is it so much easier to stay up late than it is to wake up early?

Question

why is it so much easier to stay up late than it is to wake up early?

In: Biology

Answer 1

While we define our day to be 24 hours (to sync with Sun), our body cycles are not perfectly synchronized with those 24 hours. Some have slightly longer cycles (for example: 25 hours) and others have slightly shorter cycles (for example: 23 hours). This leads to a person having an easier time staying awake longer or waking up earlier in the day.