Those who get out of bed by 7am are more likely to be thinner and happier.
20
Your heart rate can rise as much as 30% during a yawn.
69
Fingernails grow fastest on the hand you favor.
44
Every year your body replaces 98% of your atoms.
119
Contrary to popular beliefs, chocolate does not cause acne.
63
The human brain doesn't stop developing until about 25 years old.
102
It takes 17 muscles to smile, 43 to frown.
65
Chocolate, sex, and laughter are all important for a healthy brain.
37