One afternoon a man went to see his doctor and said he didn't feel well. The doctor examined him, left the room and came back with three bottles of pills.

"Take the green pill with a large glass of water when you wake up. Take the blue pill with a large glass of water after lunch. Then take the red pill with another large glass of water before you go to bed," said the doctor.

Surprised by all the medication, the man asked, "Doctor, what's wrong with me?"

The doctor replied: "You're not drinking enough water"