Kenneth H. Cooper , American soldier
said about Fitness, Improvement, Now...
"Now I say that if you run more than 15 miles a week, it's for something other than aerobic fitness. Once you pass 15 miles, you do not see much further improvement."
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"Now I say that if you run more than 15 miles a week, it's for something other than aerobic fitness. Once you pass 15 miles, you do not see much further improvement."- Kenneth H. Cooper