The other day I received a message from a friend who was preparing to run a 10K(6 miles) and she wanted some advise about training for such a race. I had been a runner for 40 years until a knee problem turned me into a walking golfer and I also had been a cross country coach for 13 years. So I guess she thought I should have some knowledge about training distance runners. That request got me thinking about the very beginning of my…..