The body mass index (BMI) for an average man is 20-24 and for a women it is 19-24. The BMI is calculated as, BMI = weight (in kg) divided by height (in m) squared. A man weighing 100 kg and measures (6 ft) 1.8m in height would have BMI of 30.9(100/1.82).
Within a tiny drop of blood, there are a million red blood cells, 300,000 platelets and 10,000 white blood cells.
Blood is 60% of plasma, which is 90% of water.
85% of the population can curl their tongue into a tube.
A large proportion of house dust is made up of human skin, because humans shed tiny particles of skin all the time.
Thomas Wedder, the English circus freak, had a nose that was 7 1/2 inches long.
A single phagocytic microphage T-cell can eat up to 100 bacteria.
There are 60,000 km of capillaries with a thickness of just a hundredth of millimetre in our body.
The cerebral cortex, a thick layer of folded nerve cells and the largest part of the entire brain is 3 mm thick. When un- folded, this would cover an area 30 times as large as that when folded.
Your heart beats 30 million times each year. Each chamber of your heart holds about 70 ml of blood.
