Nat: How are you doing?
Tom: Worse than I'd have thought.
Nat: Me too. My head is getting heavy.
Tom: I guess I'll call it a day. Whatever will be, will be...
Nat: You think so?
Tom: What's the point of sitting and struggling with your falling eyelids?
Nat: OK. I'm going to sleep too.
Tom: Yeah. See you before the exam.
Nat: Good night!
Tom: Good night!
Nat and Tom are too tired to continue studying for tomorrow's exam.