Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
We forget why we have entered a room because passing through doors creates an ‘event boundary’ causing the brain to file away what we were just thinking about.
26
A person can live without food for about a month, but only about a week without water.
156
Enamel is hardest substance in the human body.
61
Due to the angle at which the optic nerve enters the brain, staring at a blue surface during sex greatly increases the intensity of orgasms.
252
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
Unconsciousness will occur after 8-10 seconds after loss of blood supply to the brain.
94