If you ask a group of men what's the first thing they would do if they woke up as a woman, almost all of them say something about sex.
If you ask a group of women what's the first thing they would do if they woke up as a man, almost all of them say something about peeing on random objects/in random places.
I’ve had a couple of women follow me in to public toilets and commandeer aim. I had to muster unbelievable levels of concentration to get it done. Some bit of my brain has never worked at that level before or since.