The average person's skin weighs twice as much as their brain.
131
After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
Our brains have a negativity bias and will remember bad memories more than good ones.
15
Your stomach produces a new layer of mucus every two weeks so that it doesn't digest itself.
160
A person infected with the SARS virus, has a 95-98% chance of recovery.
23
Your wounds heal faster if you lick them, you instinctively do this for that reason. Tears help, too.
20
Banging your head against a wall uses 150 calories an hour.
57
You can alleviate a tickly throat by scratching your ear.
9