Well this pretty much this covers it for me:
...he trains alone in the Milton Evergreen Cemetery near his home outside Toronto. He runs laps for three or three and a half hours at a time, unbothered by traffic or the eternal inhabitants or the modern theories and gadgets of training.
At the Toronto Marathon, he raced in 15-year-old shoes and a singlet that was 20 or 30 years old. He has no coach. He follows no special diet. He does not chart his mileage. He wears no heart-rate monitor. He takes no ice baths, gets no massages. He shovels snow in the winter and gardens in the summer but lifts no weights, does no situps or push-ups. He avoids stretching, except the day of a race. He takes no medication, only a supplement that may or may not help his knees.