Close your book and listen to the conversation. What remedies for fatigue do the speakers talk about? 

Olivia: Hi, Ashley. Are you drinking coffee? That's new.

Ashley: Hi, Olivia. You're right. I usually don't drink coffee, but I need it today to wake up.

Olivia: You do look tired. Did you get enough sleep last night?

Ashley: No, I was worried about today's test, so it was hard to fall asleep.

Olivia: Come on. Let's go for a walk.

Ashley: Go for a walk? Why?

Olivia: To wake you up and to get some oxygen to your brain before the test.

Ashley: That's a good idea. Where do you want to go?