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Why Do Olympians Bite Their Medals?
Here's the real reason athletes are always photographed sinking their teeth into their medals. Jose Sepulveda (@josesepulveda87) h... Watch Now
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WATCH: Katie Ledecky's 4x200 Freestyle Comeback Is Her Trademark Moment Of Rio (So Far)
She turns nearly a one-second deficit into a two-second advantage. Watch her pull ahead
