Flu shots only work about 70% of the time.
18
Brain scans show that people who view photos of a beloved experience an activation of the caudate - the part of the brain involving cravings.
103
The human body contains over a billion miles of DNA.
147
There are times when you're walking that the pressure on your feet exceeds your body weight, and when you're running, it can be three or four times your weight.
62
Your body is creating and killing 15 million red blood cells per second.
50
After age 30, the brain begins to lose about 50,000 neurons per day - shrinking the brain .25% each year.
55
Fingernails grow nearly 4 times faster than toenails!
30
