Yawns are more contagious among people with closer relationships.
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Consumption of TNT turns urine amber or deep red, which people often mistake for blood.
301
Australian Graham Barker has been collecting his own belly button fluff every day since 1984 - keeping it in storage jars.
15
A man named Heraclitus had an illness that made his body swell up with water. To try to sweat it off, he buried himself in a steaming pile of animal poo, but then overheated and died of dehydration.
18
During the Black Plague, it was thought that bad smells were the cause of the plague. "Plague Doctors" therefore wore masks with long beak-like noses stuffed with flowers or smoke to hide the smells.
19
Chanel Tapper, a student from California, USA, has the world's longest tongue, measuring 9.75 cm (3.8 inches), from tip to top lip!
26