After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
Our eyes are always the same size from birth, but our nose and ears never stop growing.
266
Fingernails grow nearly 4 times faster than toenails.
31
Unlike dogs, pigs, and some other mammals, humans cannot taste water. They taste only the chemicals and impurities in the water.
95
The levels of two stress hormones, cortisol and epinephrine which suppress the body's immune system, will actually drop after a dose of laughter.
112
There are 206 bones in the human body!
-17
In older people, memory is best early in the morning and then declines during the late afternoon.
33
Staying awake for 17 hours is the same for your body as drinking 2 glasses of wine.
193