On average, you speak almost 5,000 words a day – although almost 80% of speaking is self-talk (talking to yourself).
Hippocrates, the Father of Medicine, suggested that a woman could enlarge her bust line by singing loudly and often.
The first human sex change took place in 1950 when Danish doctor Christian Hamburger operated on New Yorker George Jargensen, who became Christine Jargensen.
King Henry I, who ruled in the England in the 12th century, standardised the yard as the distance from the thumb of his outstretched arm to his nose.
Einstein’s brain was of average size (1375 grams – 49oz).