The average sperm cell swims at 8 inches per hour.
76
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
You see your nose at all times, your brain just chooses to ignore it.
30
The human brain uses approximately as much energy as a 10 watt light bulb.
120
In Ancient Greece, small penises were desirable, and big ones were for ‘old men and barbarians’
22