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
You can alleviate a tickly throat by scratching your ear.
12
When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
23
You're born with 300 bones, but when you get to be an adult, you only have 206!
17
Flu shots only work about 70% of the time.
18
Stress can result in more headaches as a result of the body rerouting blood flow to other parts of the body.
92
Fingernails grow fastest on the hand you favor.
44
Having sex can make a woman look younger and more attractive due to the release of estrogen and collagen.
346