In 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.
198
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
Poor eyesight (myopia) is associated with higher IQ.
232
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.
92
After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139