if you are participating in a large amount of physical activities (competitive swimming, marathons, very vigorous activities) on a regular basis it can make your periods extremely light or even eliminate them. however; it entirely depends on the person. for some people, excercise can agravate their cramps, but for others it makes them feel much more comfortable.
it means that the girl is puberty
Is that even possible? Take her to a doctor immidiately.
Exercising has health benefits. Doing it in the nude in general neither increases nor decreases the benefits.
I'm not sure what you mean asking if it 'gets to them'. Most women menstruate, this is a normal occurrence so no reason for it to bother other women when you menstruate.
Well im not a girl but it feels like they are doing it so maybe
The average age would be thirteen however menstruation is different for every female.
yes, if you are a girl, you menstruate.
No, not every female gets her period. If talking exclusively of those who are biologically female there are those who don't have the anatomy to menstruate or their bodies don't produce the hormones needed to have a menstrual cycle. Pre-pubescent girls don't menstruate and women past menopause don't menstruate, also women who are pregnant won't menstruate during pregnancy (sometimes for longer if they breastfeed), and women who have a hysterectomy to remove the uterus.
it it healthy
For me I believe the best way to motivate people in terms of Fitness is to educate them on the importance and benefits of exercising. When they understand the benefits they will follow.
man dont menstruate
Thankfully, female guinea pig don't menstruate.