An elderly gentleman was having some physical problems, so he went to see his doctor.
The doctor told the old gent that he had to drink warm water one hour before breakfast.
At the end of a week, the man returned for a follow-up visit to his doctor's office. The concerned doctor asked the old gent if he was feeling better. The man answered that he actually felt worse.
Then the doctor asked, "Did you drink warm water an hour before breakfast each day?"
"No," replied the man, "All I could do was about fifteen minutes."
(If you don't get the joke right away , think about it ... or wait until you are 80 ! )