Woman running (IMAGE) University of Jyväskylä - Jyväskylän yliopisto Caption Athletes and people working with athletes should pay attention to problems with eating and menstrual cycle in the early phase to prevent longer-term issues. Credit Unsplash Usage Restrictions No restrictions. License CC0 Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.