The increasing cost of the London Olympics is a perennial news favourite, but now it looks like its price won’t just be measured in terms of cash, but in all the broken relationships that the Games leaves in its wake.

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New evidence shows that playing football leads to a big increase in testosterone, which in turn leads to more sexual activity, as with the unfortunate shenanigans observed among Premiership footballers.

With thousands of extra athletes in town this summer, it seems certain there will be tens of thousands of surplus liaisons, many of which will involve forbidden fruit.

Good job I keep avoiding the gym and by watching sport on TV here at home, any vicarious testosterone boost is kept well indoors.