I think there is a misconception that at the workplace men join a fraternity or a secret order, which sole purpose is to ostracize women. Not quite. At the workplace, men compete with each other. This competition could be obvious or hidden. When a woman comes to a workplace, she stops being a woman and becomes a competitor that can potentially outperform a man and jeopardize his job and his and his family well-being. Once a woman becomes such a competitor, a man would try to find her weak spots and attack those spots. In other words, he’d act exactly as he would act against another man. So be good and eventually, men would respect and fear you, like they do Marissa Mayer, just like they would respect and fear another male competitor.
Some jobs though are more designed for men. It’s not that a woman can’t become a car mechanic. However, does she really want to smell like gasoline and oil and have dirty finger nails? If you do then by all means.
Another one is a fireman. As far as I know, in order to become a fireman, one has to pass a strength test which is to run for 100 yards carrying a 200 pounds load on your shoulders. This is a tough test and not every man can endure this. Therefore, not every man can work as a fireman. However, this test shouldn’t be adjusted to say 100 pounds be fairer for women. In a real situation, a fireman or a firewoman for that matter would have to carry a person from a burning house. Changes are such person can be 200 pounds, wink, wink.