When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
23
Cats have a weak sense of taste. They have only 473 tastebuds, humans have 9,000.
307
On average a woman has 4 sexual partners in her lifetime.
-143
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
Only humans shed emotional tears.
331
Tigers can see 6 times better at night than humans.
305
Stress can result in more headaches as a result of the body rerouting blood flow to other parts of the body.
92
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515