On New Year's Eve 1969, Michigan's football coach Bo Schembechler suffered a heart attack at the age of 40. Shortly thereafter, he received a letter from his former boss, long-time rival, and lifelong friend, Woody Hayes. I have never read the letter, but I have a *very* good idea of the contents. It no doubt read something to the effect of "Now you listen *up* and you listen *good*, you mule headed S.O.B., you don't like taking orders from anybody, but when those doctors tell you to do something, you *do* it!"
Bo must have done something right; he lived another 37 years.
In the mid-70s, Woody Hayes had a heart attack. A few days later, he received a letter from Schembechler. The envelope contained the letter Woody had written years before, along with a note from Schembechler, which read "A very wise man once sent me this letter. I hope you'll take his advice."