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It's become synonymous with the Olympic Games. You know the photo - the one where the sportsperson takes their shiny new medal and chomps down, mouth wide open in a grin.
The gesture's been around for a while.
But why do athletes do this? Are they signalling to each other in some sort of code? Is the medal coated in sugar?
No. Apparently, photographers just really like that particular pose.
David Wallechinsky, president of the International Society of Olympic Historians and author of The Complete Book of the Olympics told CNN:
It's become an obsession with the photographers…I think they look at it as an iconic shot.
Looking at the athletes' faces, that explanation actually makes sense.
So there you have it.
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