How can exercise affect your period? Exercise can cause irregular periods A region in the brain called the hypothalamus slows down the release of hormones responsible for ovulation, so your period may not arrive when you expect it. This usually only occurs with intense, strenuous exercise and a low-calorie diet.
Does exercising delay your period? Amenorrhea (absence of menstruation) in athletes is called exercise-associated amenorrhea. In athletes, intense training and quick weight loss can affect period. If you suddenly start exercising and working out, you tend to miss your period. Exercise affects the menstrual cycle by elevating the metabolism.