You can hear the blood flowing through your ears if you find a quiet place and cover them tightly.
17
The human brain doesn't stop developing until about 25 years old.
102
Staying awake for 17 hours is the same for your body as drinking 2 glasses of wine.
193
In Ancient Greece, small penises were desirable, and big ones were for ‘old men and barbarians’
22
The average sperm cell swims at 8 inches per hour.
76
It is possible for you to survive even after the removal of the spleen, the stomach, one kidney, one lung, 75% of the liver, 80% of the intestines, and almost every organ from the pelvic and groin area.
218
The human sigh acts as a physiological reset button.
23