color washed from spine and edge shadow. cover rub marks, crease marks, scratches, and writing impressions.  edge wear and curl. minor page corner wear. no marks on text.

My whole teaching in one sentence is, Run slowly, run daily, drink moderately, and don't eat like a pig. To be healthy, one must train - and eat - like a marathoner. This is the Ernst van Aaken method... the Pure Endurance Method. Endurance is the magic word - endurance preferably gained on long runs at moderate paces. World-class athletes run faster after using it. Women and children are natural endurance runners who thrive on it.  It is a long-term health investment which he prescribes to runners and patients alike. He writes, Only the person who runs daily, lives modestly without touching his reserves, and eats little but well will ever become a good runner, Or, for that mater, remain truly healthy. True health, Dr. Ernst van Aaken maintains, stats with endurance. And from maximum endurance grows maximum performance.