There are more bacteria in your mouth than there are people in the world.
60
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
When you fall in love, that 'high' feeling is caused by a flood of dopamine that is similar to that of cocaine.
44
Chewing gum boosts your brain power.
285
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
If you stop working out, it takes twice as long to lose strength than it took to gain it.
16
The human body contains over a billion miles of DNA.
147
Redheads require more anesthesia to 'go under' than other hair colors do.
50