Most of us have experienced unpleasant symptoms caused by hormonal changes on our periods, but far fewer understand the physiological impacts of these hormones. To optimize our athletic performance, we need to become familiar with how our periods affect our bodies so we can better prepare to train with them. We talked to VIS Expert and strength coach, Anna Nelson, MS, VIS Expert and sports scientist, Morgan Smith, PhD, and VIS Mentor and professional runner, Olivia Amber, to better underst...