The adult human brain weighs about 3 pounds (1,300-1,400 g).
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When you get goosebumps and your hair stands, the hair helps to trap air, making you feel warmer by keeping in your body heat.
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Quick naps not only improve your alertness, but they also help in decision making, creativity and sensory perception.
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When you take a step, you are using up to 200 muscles.
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Cracking your knuckles does not actually hurt your bones or cause arthritis. The sound you hear is just gas bubbles bursting.
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All the chemicals in a human body combined are worth about 6.25 euro (if sold separately).
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Stress can result in more headaches as a result of the body rerouting blood flow to other parts of the body.
92
An average heart beats 100,000 times a day, pumping some 2,000 gallons of blood through its chambers. Over a 70-year life span, that adds up to more than 2.5 billion heartbeats.
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