On average a woman has 4 sexual partners in her lifetime.
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Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
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.
73
Mushrooms are more closely related to humans than they are to plants.
47
A man's beard grows fastest when he anticipates sex.
239
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
We forget why we have entered a room because passing through doors creates an ‘event boundary’ causing the brain to file away what we were just thinking about.
26