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Did you know?The trendy Stanley tumblers, which people are currently obsessed with collecting, were originally marketed in 1913 as vacuum-insulated bottles for industrial workers, not as a fashion accessory or a viral social media item.Myth busters
Professional tennis balls are kept in pressurized cans to maintain their bounce, as the internal pressure inside the ball decreases once the seal is broken.Simple
Some professional rugby players wear padded 'scrum caps' that look like leather flight helmets, which are designed to protect their ears from rubbing and friction rather than shielding them from hard hits.Simple
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