Sleeping on your stomach can induce weirder, scarier, and sexier dreams.
22
Enamel is hardest substance in the human body.
61
There's a new vaccine for alcoholism that gives drinkers an immediate and harsh hangover, even if they drink a small amount of booze.
14
Chocolate, sex, and laughter are all important for a healthy brain.
37
A new parent will lose about 1055.6 hours of sleep in the first year of their child's life - almost 44 days!
6
The human brain doesn't stop developing until about 25 years old.
102
The record for the longest scientifically documented period without sleep is 264.4 hours (eleven days).
15
Redheads require up to 20% more anesthesia to be knocked out.
112