Okay–let me rephrase. I dont bite anyone’s head off fi they do that. 
However, I do also give up my seat (sometimes) to a old or pregnant person, and I do hold the door for other women or men.
But u know..when the train is crowded and im tired and want a seat, i will make sure to go where there are alot fo men standing. Cz when someone gets up, men are likelier to let a woman sit down. 