The focusing muscles of the eyes move around 100,000 times a day. To give your leg muscles the same workout, you would need to walk 80km (50 miles) every day.
21
Dating back to the 1600's, thermometers were filled with Brandy instead of mercury.
16
Perspiration is odorless; it is the bacteria on the skin that creates an odor.
39
Your heart will pump about 212 million liters in its lifetime.
26
The first patented condom was meant to be reused!
47
Although men ARE more likely to suffer heart attacks, women are more likely to die within a year from having a heart attack.
50
By putting a frog in a bucket of milk, scientists following up on an ancient Russian way of keeping milk from going sour have identified a wealth of new antibiotic substances.
9
Men have larger hearts; women's hearts beat faster.
77