From the Guardian:
It's not attractive for girls to sweat, though a nice glow is considered wholesome. Be careful then not to over exert yourself, particularly when playing mixed doubles at tennis. Men feel terribly inadequate if you are better than them, so remember to hit the ball out from time to time and praise your partner after every point. Do not be governed by stereotypes. You can get as much out of a game of cricket as a man. More so, if you are making the tea.
Oh dear. Now I have to read it.
I do love the Digested Read Series, even when they mock a book I enjoyed. (Because, you know. I'm a big person.)