The penis and scrotum can contract involuntarily in reaction to chilly temperatures, nervous or nervous degree and participation in athletics.[nine] This reduce of flaccid penis dimensions is referred to from the slang expression "shrinkage", due to action by the cremaster muscle mass. The identical phenomenon influences cyclists and exercise https://caidenxelsy.onesmablog.com/the-2-minute-rule-for-cum-in-pussy-68997480