title: What does exercise mean for the menstrual cycle?
mesh_terms: D000293:Adolescent; D000367:Age Factors; D005260:Female; D006801:Humans; D008598:Menstruation; D008599:Menstruation Disturbances / Q000453:epidemiology; D005082:Physical Exertion; D011627:Puberty; D013178:Sports Medicine