When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
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.
35
One human hair can support 3 ounces.
191
It takes about 20 seconds for a red blood cell to circle the whole body.
102
The average person will go on a date at least 100 times before they finally marry.
33
A human being loses an average of 40 to 100 strands of hair a day.
133
Babies crawl an average of 200m a day.
212
It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127