Endurance running is in the genetic make-up of every human being. It's one of the things that we have evolved to do. When you compare many of the physical attributes of man, such as strength, speed and agility, with that of other members of the animal kingdom, we don't fare so well. For example,a cheetah is reported to have reached phenomenal running speeds of 120 km/h (75 mph).
When It Comes To Endurance Running, Man is KING!
But...
