Yawns are more contagious among people with closer relationships.
163
A human brain produces as many as 12,000 to 50,000 thoughts per day, depending on how deep a thinker a person is.
23
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
The human eye blinks an average of 4,200,000 times a year.
233
Playing Tetris after a traumatic event can prevent the development of traumatic memories and reduce the chance of having flashbacks.
29
You can't tickle yourself.
29
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22