Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
We blink 25 times a minute.
51
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
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
A human being loses an average of 40 to 100 strands of hair a day.
133
Perspiration is odorless; it is the bacteria on the skin that creates an odor.
39
Chocolate, sex, and laughter are all important for a healthy brain.
37