In 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.
199
You can hear the blood flowing through your ears if you find a quiet place and cover them tightly.
19
After age 30, the brain begins to lose about 50,000 neurons per day - shrinking the brain .25% each year.
55
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
Stress can result in more headaches as a result of the body rerouting blood flow to other parts of the body.
92
A human being loses an average of 40 to 100 strands of hair a day.
133