When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
23
Tigers can see 6 times better at night than humans.
305
The adult human brain weighs about 3 pounds (1,300-1,400 g).
99
On average, a human being will have sex more than 3,000 times and spend two weeks kissing in their lifetime.
161
Mushrooms are more closely related to humans than they are to plants.
47
A person can live without food for about a month, but only about a week without water.
156
The largest cell in the human body is the female egg and the smallest is the male sperm.
682
Our Right Lungs takes more air than our left lung.
194