It takes 17 muscles to smile, 43 to frown.
65
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
Fingernails grow nearly 4 times faster than toenails.
31
Motorists who talk on cell phones are more impaired than drunk drivers with blood-alcohol levels exceeding .08!
49
When you fall in love, that 'high' feeling is caused by a flood of dopamine that is similar to that of cocaine.
44
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
When you take a step, you are using up to 200 muscles.
886