One quarter of the bones in your body are in your feet!
36
Your heart rate can rise as much as 30% during a yawn.
69
When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
23
There is a disease called ichthyosis that turns the skin scaly like a fish.
90
If you are bitten by a poisonous snake, and fail to receive medical attention, you still have a 50% chance of survival.
28
Fingernails grow nearly 4 times faster than toenails.
31
Brain freeze is caused by the brain sensing the drop of temperature on your palate and increasing blood pressure in an attempt to save you from freezing.
14
Bearing a male child can alter a woman's brain by leaving male DNA that can persist for the rest of her life, making her less likely to suffer from Alzheimer's disease, promote tissue repair, and improve her immune system.
16