To compare the effects of aerobic exercise and yoga on Premenstrual syndrome.

Background: Eighty percent of women during their reproductive age experience some symptoms attributed to premenstrual phase of the menstrual cycle. Premenstrual syndrome (PMS) is characterized by emotional, behavioral, and physical symptoms that occur during late luteal phase of menstrual cycle and are relieved after the onset of menstruation. Aerobic exercise and yoga are one of the ways to reduce these symptoms.