Human teeth are almost as hard as rocks!
47
"Fish odor syndrome" is a rare genetic disorder that causes people to smell like rotten fish.
5
The whiter your tongue, the more germs there are on it.
88
An average heart beats 100,000 times a day, pumping some 2,000 gallons of blood through its chambers. Over a 70-year life span, that adds up to more than 2.5 billion heartbeats.
73
A sneeze can travel as fast as 100 miles per hour.
43
When you fall in love, that 'high' feeling is caused by a flood of dopamine that is similar to that of cocaine.
44
The aorta, the largest artery in the body, is almost the diameter of a garden hose.
37
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