The human sigh acts as a physiological reset button.
23
Tigers can see 6 times better at night than humans.
305
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
Pain occurs when sounds are above 130 db.
124
Fingers prune underwater not because of them absorbing the water or washing away the oil, but because of an evolutionary trait caused by the brain to enhance the grip of your fingers underwater.
24
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
Due to the angle at which the optic nerve enters the brain, staring at a blue surface during sex greatly increases the intensity of orgasms.
252
On average, there's 100 billion neurons in the human brain.
83