Boris Johnson thinks the amount of time children spend exercising in school should increase.

London's Mayor wants kids to do 2 hours of sport a day to try to capitalise on Team GB's Olympic success.

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Meanwhile, Great Britain's Keri-Anne Payne agonisingly missed out on an Olympic medal in swimming's 10-kilometre marathon.

She won a silver in Beijing four years ago, but was edged out in fourth this time round.