It takes approximately 12 hours for food to entirely digest.
93
Yawns are more contagious among people with closer relationships.
163
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
When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
23
The adult human brain weighs about 3 pounds (1,300-1,400 g).
99
The human eye blinks an average of 4,200,000 times a year.
233
A person can live without food for about a month, but only about a week without water.
156