Mud bath
An elderly man goes into his doctor’s office for an annual physical. After a while, the doctor comes out and says: "I'm sorry, Bill, but we have discovered you have a condition that only allows you another six weeks to live."
"But Doctor," Bill replies, "I feel great. I haven't felt better in years. This just can't be true. Isn't there anything I can do?"
After a moment, the doctor says: "Well, you might start going down the street to that new health spa to take a mud bath every day."
"And that will cure me?" Bill asks excitedly.
"No," replies the doctor: "but it will get you used to the dirt."