During menstruation, the sensitivity of a woman's middle finger is reduced.
47
India used to be the richest country in the world until the British invasion in the early 17th Century.
37
On average, there's 100 billion neurons in the human brain.
83
If you were to roll a lung from a human body and out flat it would be the size of a tennis court.
36
20 minutes after smoking a cigarette, blood pressure drops to normal.
37
Your hair grows faster in the morning than at any other time of day.
91
Brain scans show that people who view photos of a beloved experience an activation of the caudate - the part of the brain involving cravings.
103
The heart pumps about 1 million barrels of blood during an average lifetime!
30