After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
Men have larger hearts; women's hearts beat faster.
77
The average female will have 3.3 pregnancies in her life.
49
Sleeping on your stomach can induce weirder, scarier, and sexier dreams.
22
When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
23
Laughing could dramatically improve your health – and be as good for you as a deep state of meditation, researchers have found.
28
Fingernails grow nearly 4 times faster than toenails.
31
Research indicates that babies who suck on pacifiers are more prone to ear aches.
21