Redheads require up to 20% more anesthesia to be knocked out.
112
In 1996, research found that having excessive body hair is linked to higher intelligence.
23
The human brain is more active during sleep than during the day.
28
About 400 different kinds of microbes live on and in the human body.
-3
Some people have a "natural alarm clock" allowing them to wake up when they want. This is actually caused by a burst of the stress hormone adrenocorticotropin.
15
Foreign accent syndrome is a rare brain disorder which causes people to speak in a foreign accent involuntarily.
15
It has been said that over 350 million people suffer from Facebook Addiction Disorder.
115
It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127