It takes about 20 seconds for a red blood cell to circle the whole body.
102
Falling in love raises levels of nerve growth in a person's brain for about a year and can improve their memory.
39
People who sleep late have more mental stamina and can outperform early risers.
33
The heart pumps about 1 million barrels of blood during an average lifetime!
30
Human teeth are almost as hard as rocks!
47
When your face blushes, the lining of your stomach turns red, too.
154
Nearly 80 percent of all sudden cardiac arrests happen at home.
7