More facts to impress your mates. Prepare to be amazed...
Kiss Scientists at the Think Tank Museum in Birmingham have calculated that an average person burns 26 calories in a minute of philematology - kissing. Compare that to the energy expended in a minute's brisk walking, just 4.5 calories.
All fingers and thumbs? Do you use your thumbs when texting? A researcher at Warwick University studying mobile phone users in nine cities around the world, including Chicago, London, Beijing and Tokyo, discovered that the twenty-something generation, who have grown up using mobile phones and Gameboys, have evolved with the technology. They are more likely to use their thumbs than their fingers for pointing or pushing buttons.
Wash your mouth out A healthy person's urine is cleaner than spit because it does not contain bacteria. Your mouth is home to a staggering 100,000,000 micro-organisms
Hail to the stones Cut a large hailstone in half and it looks like an onion, with layers of clear and opaque ice. The biggest recorded hailstone in the UK weighed in at 142 grams and fell on Horsham, West Sussex, on 5 September 1958. It was a mere tiddler compared to the ballistics that rained down in the Gopalanj district of Bangladesh, 14 April 1986. These one-kilogram hailstones killed 92 people.
Can't stomach that? The digestive juices in your stomach have a pH of 1: strong enough to dissolve stainless steel razor blades, and your stomach's walls. So why don't they? The answer lies in the layer of sticky mucus, 38% of the empty stomach's weight, which is relatively resistant to digestion.