Other good things about netball are that it is a non-contact sport, and it is cheap, requiring only goals and a ball.

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Squash players also have a tendency to blow up - smashing rackets and outbursts - because they have to deal with the added dimension of sharing personal space in a non-contact sport, he says.

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Politics has never been a non-contact sport.

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Last year almost 360, 000 children played a non-contact form of the sport at school, according to USA Rugby, the sport's national governing body.

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