Why do girls stay in the bathroom for half an hour?

This problem is difficult to generalize. Everyone's situation is different and the length of time will be different. But some possible reasons include: it takes time to defecate, and you need to wait for the intestine to be completely emptied; Women's physiological structure leads to slow urination; This time is used for rest, thinking or psychological relaxation. Of course, if you don't leave for a long time, you may have health problems such as cystitis and urinary tract infection. It is recommended to seek medical advice in time. In short, everyone's physical and psychological situation is different, and their individual differences should be respected.