The smile is a universally understood symbol, a non-verbal communication of happiness. There’s a biology behind it – positivity triggers endorphins and neuronal signals to upturn your lips; that muscular contraction, in turn, stimulates more endorphins, dopamine and serotonin, making you scientifically happier. That messaging has, of course, become ubiquitous across the psychology of contemporary culture – horologists habitually set timepieces to 10:10, to make them ‘beam’ at potentialhellip;

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