Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
If you unfolded your brain, it would cover an ironing board.
42
10 seconds is the amount of time until unconsciousness after the loss of blood supply to the brain.
108
The brain receives 20% of the body’s oxygen and 25% of total body glucose utilization, despite it accounting for only 2% of a person’s weight (about 1.4 kilograms).
8
After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
When you look up at the blue sky and see white dots flying around, you’re actually seeing your own white blood cells.
30
The brain can stay alive for 4 to 6 minutes without oxygen. After that cells begin die.
193