Why Endurance Athletes Feel Less Pain
While researching a book on endurance a few years ago, I interviewed a German scientist named Wolfgang Freund who had recently completed a study on the pain tolerance of ultra-endurance runners. Subjects in the study had to hold their hands in ice water for as long as possible. The non-athlete control group lasted an average of 96 seconds before giving up; every single one of the runners, in contrast, made it to the three-minute safety cut-off, at which point they rated the pain as a mere 6 out of 10 on average.