It takes about 20 seconds for a red blood cell to circle the whole body.
102
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
Early American humans hunted car-size armadillos and used their shells for houses.
12
It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127
Pain occurs when sounds are above 130 db.
124
The human body contains over a billion miles of DNA.
147
Research has determined that most people are happiest at 7:26pm on a Saturday night.
69