Participants will engage in 16 classes of 60-minute Zumba® fitness for two consecutive menstrual cycles (an 8-week period, twice weekly). Each class was one h in length and a recovery period of at least 48 h was taken between classes.

The participants in the control group did not receive any intervention.

Participants will engage in 16 classes of 60-minute Zumba® fitness for two consecutive menstrual cycles (an 8-week period, twice weekly). Each class was one hour in length and a recovery period of at least 48 h was taken between classes. Each session will be initiated with low-intensity movements for the first 5 min, followed by an increasing intensity throughout the workout. At the end of the training session, the intensity will be gradually reduced. The Zumba sessions will be supervised by three certified Zumba instructors, each responsible for regular sessions per week.

Pain intensity will be measured by using a 10-point visual analog scale(VAS) in which a line was calibrated from 0 to 10 with 0 representing ''no pain at all''and 10 representing ''worst pain possible.'' Participants will indicate their perceived pain levels by pointing to the appropriate value on a 10-cm horizontal ruler. The intensity of pain will be rated to the first decimal place in centimeters.Higher scores represent higher menstrual pain intensity.

Pain intensity will be measured by using a 10-point visual analog scale(VAS) in which a line was calibrated from 0 to 10 with 0 representing ''no pain at all''and 10 representing ''worst pain possible.'' Participants will indicate their perceived pain levels by pointing to the appropriate value on a 10-cm horizontal ruler. The intensity of pain will be rated to the first decimal place in centimeters.Higher scores represent higher menstrual pain intensity.

duration of menstrual pain in days will be measured by using descriptive data that will be obtained from study participants.