The human eye blinks an average of 4,200,000 times a year.
233
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
When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
Only humans shed emotional tears.
331
The human brain has the capacity to store everything that you experience.
4k
The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
Your fingernails grow faster in summer.
744
A person will create enough saliva to fill two average size swimming pools during his lifetime.
191