Women aren't as stupid as men are. Seriously, we are willing to do stupid shit just to prove what kind of men we are. Because we aren't as important to the gene pool collectively as women are - we have some self-destructive tendencies.
I'm not a Navy SEAL - but every one that I've met (and it's been a lot) has told me that, in order to make it through the basic training you have to make up your mind to either PASS or DIE in the attempt. If there's any recognition in your mind that quitting is an option you WILL ring the bell.
Also - I had to man Visit, Board, Search and Seizure (VBSS) teams in the Persian Gulf. On my ship - the team had no women but I had plenty of women aboard the ship in other jobs. They asked me if women were banned from VBSS? I told them ... "No, I'll put any woman on that team who qualifies but I haven't received a single volunteer". Invariably - all of the women asking this question weren't willing to volunteer for themselves but one day - I got a gal who did.
And she passed the physical requirements and I put her on the team.
Well, she went on her first mission ... which lasted a week, and we seized and boarded (and seized - by authority of the UN) a cargo ship loaded with contraband. She had to board that ship and remain aboard until we got it to the UN holding anchorage - which took a week because this ship was heavily damaged and rotting and couldn't go more than 2 knots.
When she returned from that mission - she asked me if she could quit the VBSS team. I asked her why and she told me that the head (toilet facilities) on that confiscated ship were so unsanitary - and beyond cleanup - that the corpsman put the facilities off limits and declared them a bio-hazard to personnel. This COMMON on middle eastern ships - they are nasty in just that way. She told me she had to shit into a paper plate on the fantail of the ship and toss it over the side.
Her quote ... "I'm willing to get shot at - but I'm not defecating into a paper plate. The men can put up with that - not me."
So ... women also don't like NASTY. They like to be clean. I took her off the team - no problem since it was a voluntary team.
I know that's anecdotal, and the plural of anencdote is no "data" - but ... you know.