Space crews, athletes and pop stars all indulge in strange rituals before moments of high stress. It's easy to mock these behaviours - indeed even the people who practise them often admit they're a bit weird - but they can act like performance enhancing drugs.
Dr Laurie Santos looks at the research to show why creating a good luck ritual can make us perform better and feel calmer, happier and more confident when faced with life's big moments.
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