The tallest nation in the world is the Watusis of Burundi.

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

About 13% of people are left-handed. Up from 11% in the past.

The human head contains 22 bones.

Men loose about 40 hairs a day. Women loose about 70 hairs a day.

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