A man's beard grows fastest when he anticipates sex.
239
It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
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 brain has the capacity to store everything that you experience.
4k
Yawns are more contagious among people with closer relationships.
163