Only humans shed emotional tears.
331
A person can live without food for about a month, but only about a week without water.
156
A third of the human population sneezes when they look at the Sun. Light can signal the ocular nerve near the sinuses and triggers a sneeze.
18
When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
The average person will go on a date at least 100 times before they finally marry.
33
It takes approximately 12 hours for food to entirely digest.
93
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
In 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.
198