What should the man drink a lot?

M: I feel very ill, Doctor.
W: What is the matter with you?
M: I have a terrible sore throat. I have a headache, too.
W: Have you been coughing and sneezing?
M: I cough a lot, but I don’t sneeze.
W: Put this thermometer under your tongue. I want to see if you have a fever. Let me see. Yes. You have a fever.
M: Is my temperature very high?
W: No, not very. Here is a prescription. Stay in bed and rest. Drink hot tea. Come in and see me in my office on Monday.