Here is the setup of these studies: Take people who have just had something very bad happen to them, like a motor vehicle accident or a rape, and within a few hours or a day or two at most, flip a coin and put half these people on a beta blocker and half on an inactive substance that looks the same (i.e. placebo).

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Earlier my companion, a spa rookie, was led to his first treatment wearing a robe, flip-flops and a trepidatious half-smile.

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The spring-heeled winger raced over from 10 metres inside his own half and celebrated in typical fashion with an acrobatic back flip.

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The double McTwist 1260 sees White flip twice while completing three and-a-half twists.

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When you flip a coin, for instance, you know that the odds are that half the time heads will come up and half the time tails.

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