I never understood why some people would work late into the night and sleep most of their mornings away, but now that I am sitting here, at 1am, listening to the same song on repeat, I get it.

If I stay up until 3am, I’m not going to get up at 5am the next morning. But I’ll return to my usual routine the next day.

They were studying extreme early birds when they noticed that two of their subjects, a mother and daughter, got up naturally about 4 a.m. but also went to bed past midnight.

People sometimes telephone him at two o’clock in the morning, describe their symptoms, and ask if they should call an ambulance for the two-hour trip to the nearest hospital.

It's a bit much ringing me up at three o'clock in the morning.