Every hour one billion cells in the body must be replaced.
17
If you stop working out, it takes twice as long to lose strength than it took to gain it.
16
It is almost impossible to sneeze with your eyes open. It is a defense mechanism that has evolved to protect our eyes from bacteria and debris.
164
Panophobia is the fear of everything.
52
We are born with 350 bones, and die with 206.
135
One out of 20 people have an extra rib.
66
The human brain doesn't stop developing until about 25 years old.
102
It takes about 20 seconds for a red blood cell to circle the whole body.
102