When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
23
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
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
A person can live without food for about a month, but only about a week without water.
156
Your thumb is about the same size as your nose.
124
Our eyes are always the same size from birth, but our nose and ears never stop growing.
266
A man's beard grows fastest when he anticipates sex.
239