Fun Facts about the Human Body

blonde hair

Only 2% of the world’s population have blonde hair

Blonde hair is extremely rare globally. 84% of the world’s population have black or dark-brown hair, including most of Africa and Asia. Blonde hair is most common in northern European regions. https://www.holleewoodhair.com/hair-color-statistics/ Why do people have blonde hair? People evolved to have blonde hair because, as they migrated north, the lighter the skin and hair, …

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thermometer 37

The average human temperature has dropped by about a degree in the last 150 years. In 1851 German doctor Carl Reinhold August Wunderlich (what a name) calculated that the average armpit temperature of 25,000 patients was 98.6F (37C). Scientists at Stamford university of studied thousands of historic medical reports including medical records of civil war …

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The US has the highest gym membership in the world… (and the highest rate of obesity)

There is a direct relation between the rate of gym membership and the rate of obesity. The higher the number of people who go to the gym, the higher the number of people who are obese. Sources: https://www.statista.com/statistics/252933/leading-markets-of-the-health-club-industry-worldwide-by-number-of-members/ http://apps.who.int/bmi/index.jsp https://en.wikipedia.org/wiki/List_of_countries_and_territories_by_population_density