Inclusion Criteria:  young women aged 18-25 years with a body mass index (BMI): 18-25 kg/m2, having regular menstrual cycles of 23-35 days duration, no previous practice of aerobic exercise, free from musculoskeletal injury, not using oral contraceptive pills or taking any psychotropic agents, having no depression or genital tract diseases  Exclusion Criteria:  pregnancy, contraindications to physical exercise, metabolic or cardiorespiratory illness, cigarette smokers, women who recover from a major injury or using anti-inflammatory, hyperlipidemia or hypertension medications, any abnormality in ovulation, and women with diabetes mellitus, thyroid, pituitary, or ovarian disorders