For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
A person will create enough saliva to fill two average size swimming pools during his lifetime.
191
Enamel is hardest substance in the human body.
61
By weight, Bone is five times stronger than steel.
417
We share 70% of our DNA with a slug.
218
Cats have a weak sense of taste. They have only 473 tastebuds, humans have 9,000.
307
Crying literally alleviates stress and uniquely allows humans to decrease feelings of anger and sadness.
24
On average, there's 100 billion neurons in the human brain.
83