Sexist or Nice???

So for P.E. this past week we had a substitute gym teacher. He made the 2 fastest girls and the 2 fastest boys in our class race. If the girls won, the boys would have to do 50 push ups. If the boys won, the girls would only have to do 5 push ups.

They raced, and the boys won by a nose.

He made all of the girls in our class do 5 push ups.

A lot of the boys and the girls were like, "he's so sexist, he was pretty much saying that the girls were weak."

Some of the girls were like, "I am SO glad he didn't make up so 50!"

Do you think he was being rude and sexist, or do you think he was just on the girl's side and was nice to not make us do 50 push ups?