In 1996, research found that having excessive body hair is linked to higher intelligence.
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The brain receives 20% of the body’s oxygen and 25% of total body glucose utilization, despite it accounting for only 2% of a person’s weight (about 1.4 kilograms).
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You can hear the blood flowing through your ears if you find a quiet place and cover them tightly.
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There's 100 trillion good bacteria living in your body.
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If you are cold you are more likely to be hungry because you use energy to keep warm.
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One human hair can support 3 ounces.
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The focusing muscles of the eyes move around 100,000 times a day. To give your leg muscles the same workout, you would need to walk 80km (50 miles) every day.
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