Doctors and researchers don't know exactly how many female runners suffer from exercise-induced diarrhea, but they estimate that it afflicts a third to a half of those who are training or racing at any given time.
Read MoreDoctors and researchers don't know exactly how many female runners suffer from exercise-induced diarrhea, but they estimate that it afflicts a third to a half of those who are training or racing at any given time.
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