Is it possible for too much exercise stop your period or make you infertile?

Yes: Extreme forms of exercise can cause the signals from your brain to your ovaries to be out of sync. And this cause cause lower hormone production (estrogen) from your ovaries. It can also prevent the ovaries from growing eggs and leads to irregular or no menstrual cycles at all.

Yes: Athletic amenorrhea is when too much exercising can make one have abnormal ovulation or stop ovulation all together. High intensity activity can contribute more frequently to the abnormal ovulation such as running, gymnastics, and ballet dancing. Choose low impact exercising in moderation.