The adult human brain weighs about 3 pounds (1,300-1,400 g).
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The world's shortest man measures only 21.5 inches.
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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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When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
23
Mushrooms are more closely related to humans than they are to plants.
47
A human brain produces as many as 12,000 to 50,000 thoughts per day, depending on how deep a thinker a person is.
23
Stress can result in more headaches as a result of the body rerouting blood flow to other parts of the body.
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