I don't criticize weight training - as long as it is not a substitute for aerobic training.
Kenneth H. CooperAccording to the Gallup Poll, 24 percent of American adults exercised regularly in 1961, and 50 percent after 1968. The peak was 59 percent in 1984, dropping off to 51 percent last September.
Kenneth H. CooperNow 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