By weight, Bone is five times stronger than steel.
417
It takes 17 muscles to smile, 43 to frown.
65
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
Your spit has a painkiller 6 times stronger than morphine. It contains a substance called opiorphin that is stronger than morphine.
39
You can reschedule your sleeping pattern by not eating 12-16 hours before you want to be awake. Upon eating after this time period, your internal clock will reset to a new day, with the time of your first meal being interpreted as "morning".
11
In 1996, research found that having excessive body hair is linked to higher intelligence.
23
Every year your body replaces 98% of your atoms.
119
The chemicals indole and skatole, which help to account for the particular smell of human feces, are used as ingredients in perfume!
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