Ok, when I was looking at the internet to see what on earth you could possibly mean, I did stumble on the video that image was taken from, which is an anti -sexist sports ad, where women are acting out what it means to “run like a girl “ used as an insult, and then showing girls really running, ie. properly as if they are trying to get somewhere.
Maybe it’s a US thing, because I have never come across this idea that women run in a specifically stupid way? I am astounded you have ever seen a woman seriously attempting to run like that. Maybe they were joking?
The other alternative is that some women think looking competent at anything is unfeminine and scary to men. Honestly I think the women you saw were mucking about though, because it would take a serious amount of energy to run that way and you’d end up not going much faster than walking. I guess people attempting to run in high heels might need to put their arms out to balance, but it wouldn’t look like the young woman in the picture - and who runs in high heels anyway, people would take them off and go barefoot before they did that.
