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
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
Having sex can make a woman look younger and more attractive due to the release of estrogen and collagen.
346
Tigers can see 6 times better at night than humans.
305
Human hair and fingernails continue to grow after death.
7
Your fingernails grow faster in summer.
744
When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
An average heart beats 100,000 times a day, pumping some 2,000 gallons of blood through its chambers. Over a 70-year life span, that adds up to more than 2.5 billion heartbeats.
73