In the Middle Ages the length from the tip of the middle finger to the elbow was called an ell.

The muscle that lets your eye blink is the fastest muscle in your body. It allows you to blink 5 times a second.

On average, you blink 15 000 times a day. Women blink twice as much as men.

A typical athlete’s heart churns out 25 to 30 litres (up to 8 gallons) of blood per minute.

We have four basic tastes plus umami. The salt and sweet taste buds are at the tip of the tongue, bitter at the base, and sour along the sides; umami is a mixture of tastes sensed along the center of the tongue.

Not all our taste buds are on our tongue; about 10% are on the palette and the cheeks.

On average a hiccup lasts 5 minutes.

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