laminatedevildoll,
the point of my post was it does not matter to me whether other men are good at physics or not, the only thing that matters to me are my own abilities.
as for you, even if you were the only female physics major in the world, so what? that would be a distinction, that you not only can cut it, but can cut it with little support and even some discouragement.
my childhood physician was an old woman who got maybe the first medical degree given a woman from vanderbilt med school, and they made her come to the side door to receive it, and would not let her sit on the stage. maybe they did not want to admit this woman was smarter than the rest of the men.
when my wife was taking premed courses some men told her they resented that smart women like her were taking slots in med school way from guys!
in med school several of the professors were downright rude and very discriminatory to her. eventually some of the worst actually came around.
now that she is a doctor she has repeatedly proven her abilities, not only at caring treatment, but at very astute (life saving) diagnostics, and also superior management. she has the whole package, and she does not discriminate.
on the other hand dancing is great too. I am not only a research mathematician, but a pool player, one time wrestler and meat lugger, ballroom dance instructor, acapella singer, and avid comic book collector (I have a first edition #1 "three musketeers", in the classic comics series).
[when i was a college instructor at some little school, my students were mind boggled when i stepped out of the crowd and actually won a game of one pocket from a pool playing professional, named Jack White, who used to tour the campus circuit.]
but when getting my phd i had to give up other pursuits at least temporarily, there just wasn't time for them. if you do not have time for a dance co major, you could still dance.
staying physically fit is helpful for doing research, as it gives you more stamina.
good luck, laminatedevildoll.