this first-hand on a 1998 trip to Kenya. One morning, I joined a handful of marathon runners who were being coached by Dr Gabriella Rosa as they tackled the infamous Fluorspar Hill that rises nearly 4000ft in 13 miles.I managed to hang on for only 10 minutes
toward home. Two hours, nothing to it. When I want to increase my training prior to a marathon, I just add another 9/1 segment on the outbound trip. Now the session lasts two hours and 20 minutes, and I hardly notice the difference. Two weeks later, I do
