On average, women have always lived longer than men.
195
Dogs can be trained to identify the scent of lung cancer long before symptoms develop.
190
The human brain is more active during sleep than during the day.
28
Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
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
Your hair grows faster in the morning than at any other time of day.
91
More people have a phobia of frogs than rats.
41
About half of all Americans are on a diet on any given day.
29