When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
23
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
Women have about four times as many foot problems as men; lifelong patterns of wearing high heels often are the culprit.
111
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
Cats have a weak sense of taste. They have only 473 tastebuds, humans have 9,000.
307
It is possible for you to survive even after the removal of the spleen, the stomach, one kidney, one lung, 75% of the liver, 80% of the intestines, and almost every organ from the pelvic and groin area.
218
Tigers can see 6 times better at night than humans.
305
Human hair and fingernails continue to grow after death.
7