A person will create enough saliva to fill two average size swimming pools during his lifetime.
191
Humans are capable of running 40 mph according to a study by bio-mechanical expert Dr. Matthew Bundle. Today's fastest man, Usain Bolt, has a top speed of 28 mph.
34
We share 70% of our DNA with a slug.
218
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
You can't tickle yourself.
29
It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127
Tigers can see 6 times better at night than humans.
305
The human eye blinks an average of 4,200,000 times a year.
233