“There was no girls' cross-country team at our high school, since cross-country courses were two or three miles long, and, at that distance, a girl's uterus could fall out.” RunningExerciseGirls Book:The First 20 Minutes: Surprising Science Reveals How We Can Exercise Better, Train Smarter, Live Longer Source: The First 20 Minutes: Surprising Science Reveals How We Can Exercise Better, Train Smarter, Live Longer