I don’t know what it is, doc,” the young man said. “I just don’t feel good.”
The doctor examined him and ran some tests. Then she talked to her nurse and came into the examination room with three bottles of different-colored pills.
“OK,” the doctor said. “I want you to take one blue pill with a large glass of water every two hours. I want you to take a green pill with a large glass of water every three hours. And then take one of the yellow pills, with a large glass of water, every four hours.”
“Geez, that’s a lot of pills,” the patient said. “What’s the matter with me?”
“You’re not drinking enough water.”