It's like you've been to one of the clinics! Howard says this very thing at his clinics. It isn't that the girls can't do the things were showing them, but that they haven't been shown how. BTW, who ever said the girls were "physically challenged"?
"Physically challenged" is perhaps a poor choice of words. Sorry. It's just incredibly frustrating to be a parent and have people say my daughter can't do certain movements simply because she is a female. Especially when I know she can do them. Obviously not as good or as efficient as a MLB player, but the basic action is the same.