Numerous studies suggest that women can relieve their symptoms of Premenstrual Syndrome with regular cardiovascular exercise (3 to 4 days a week). Here are some findings and theories behind the exercise-PMS connection:
Exercise can decrease abdominal bloating and other fluid-retention problems.
Exercise promotes weight loss, which in turn may reduce symptoms. (Excess body fat is associated with PMS.)
Exercise seems to diminish PMS-related depression and anxiety. This could be due to the release of endorphins and other mood-raising chemicals.
Exercise also reduces stress, another factor that triggers or exacerbates PMS in many women.