Enamel is hardest substance in the human body.
61
You can reschedule your sleeping pattern by not eating 12-16 hours before you want to be awake. Upon eating after this time period, your internal clock will reset to a new day, with the time of your first meal being interpreted as "morning".
11
After age 30, the brain begins to lose about 50,000 neurons per day - shrinking the brain .25% each year.
55
When you fall in love, that 'high' feeling is caused by a flood of dopamine that is similar to that of cocaine.
44
The heart pumps about 1 million barrels of blood during an average lifetime!
30
Most dreams last only 5 to 20 minutes.
79
There are 206 bones in the human body!
-17
After an 11 year study, cell phones were shown not to increase chances of getting cancer.
14