by Jason R. Karp, Ph.D., Published Mar. 14, 2014, Updated Jan. 18, 2016 at 12:26 PM UTC
Every woman is different, but monthly cycles are all similar and can affect your running.
Start your FREE subscription to Competitor Digital today!
Get our monthly digital magazine, weekly running content & exclusive offers delivered to your inbox.
© 2014 Competitor Group Inc. All Rights Reserved