I m jumping rope everyday about 300 i want to know that is this increase the breast size? and some of my friends say that it may cause some problem to uterus, like uterus may dislocate from its normal position.. I know it sounds crazy but still I want to know whether that is true or not.. and also they say when the uterus comes little bit down from its position then there is 0% for getting pregnant.. I also I want to continue jumping rope as it is a good excercise to keep my weight in control.. does anyone knows any information about this???