There is a lot of pressure not to be muscular for females these days and it's really sad! I used to think that having muscles was a bad thing until I was like 13 or 14 and went to the marine booth at a fair. They had prizes for males if they did a certain amount of pull-ups and prizes for females if they did a could hold their chin over the bar for a certain amount of time. I forget what the amount was to get a prize but it was something like 10 or 15 seconds so really not that long. I told the marine that I was doing pull-ups and he said no girls can't do pull-ups. I don't remember how many pull-ups I did but the marine apologized to me and told me they could really use me in the marines when I got older.
At college I'm in a male-dominated field so I'm the only girl in our major and one day all the guys were arguing about which one of them was the strongest and I walked over and said, "guys I'm actually the strongest." And then they all stopped arguing and agreed with me.