Context: I slept for most of the day , as I was exhausted . Then , Holly and I hung out for awhile , before taking the bus into Denver to catch up with a bunch of her writing friends . ( Holly writes too ! She 's good !
Question: What may be the reason for them being so exhausted ?
Option 0: They have a medical condition that causes restlessness .
Option 1: They were up late the night before .
Option 2: They have insomnia .
Option 3: They are pregnant .
Answer: 1