The largest cell in the human body is the female egg and the smallest is the male sperm.
682
It takes about 20 seconds for a red blood cell to circle the whole body.
102
The human sigh acts as a physiological reset button.
23
Obsessive nose picking is called Rhinotillexomania.
101
We forget why we have entered a room because passing through doors creates an ‘event boundary’ causing the brain to file away what we were just thinking about.
26
The world's shortest man measures only 21.5 inches.
73
If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
Your heart will pump about 212 million liters in its lifetime.
26