It's pretty intense, and that's not even considering how much it wrecks your body.

[Not that... being a vigilante doesn't, but at least that feels like a better sacrifice. Saving lives is worth the likelihood that she'll have arthritis by the time she's thirty.]

You get a table, stick a little net along the middle - [she's making gestures to accompany the explanation.] - then use rackets to hit a ball back and forth over the net. The aim is to make your opponent miss the ball. You can play it one-on-one, or in teams of two.

It's a version of tennis, which is played on the ground, on a large scale.