The average sperm cell swims at 8 inches per hour.
76
The human sigh acts as a physiological reset button.
23
Women have about four times as many foot problems as men; lifelong patterns of wearing high heels often are the culprit.
111
One quarter of the human brain is used to control the eyes.
43
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 mostly breathe from only one nostril at a time!
75
According to one report, it would take 800 marijuana joints to kill a person - but the cause of death would be carbon monoxide poisoning.
176
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