Moore keeps her tetanus shot up to date and makes sure she gets to a Bikram yoga class at least five times a week.

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By 2011, there were some 5, 000 Bikram Yoga studios worldwide.

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Bikram Choudhury, the Hot Yoga pioneer, built a multimillion empire by trademarking his routine.

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One of the participants, Sub-Inspector Bikram Khadka, said the yoga camp had helped him realise how to take his weight problem.

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Bikram says that he is not, in fact, trying to franchise or copyright yoga as such, only his specific sequence of postures and way of teaching it.

ECONOMIST: Face value