A guy suffering from a miserable cold begs his doctor for relief. The doctor prescribes pills. But after a week, the guy’s still sick. So the doctor gives him a shot. But that doesn’t help his condition either.
"Okay, this is what I want you to do," says the doctor on the third visit. "Go home and take a hot bath. Then throw open all the windows and stand in the draft."
"I’ll get pneumonia!" protests the patient.
"I know. That I can cure."