Your heart will pump about 212 million liters in its lifetime.
26
Every hour one billion cells in the body must be replaced.
17
Fingernails grow nearly 4 times faster than toenails.
31
If your stomach didn't produce a new layer of mucous every two weeks, it would digest itself.
33
Flu shots only work about 70% of the time.
18
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
Motorists who talk on cell phones are more impaired than drunk drivers with blood-alcohol levels exceeding .08!
49
Stress can result in more headaches as a result of the body rerouting blood flow to other parts of the body.
92