The reflex that causes people to sneeze when looking at the sun is called the “photic sneeze reflex.” It’s also known as Autosomal Dominant Compelling Helio-ophthalmic Outburst Syndrome, which abbreviates ADCHOO.

When your eyes move, your brain purposely blocks your vision, which is why you can’t see the motion of your own eyes in a mirror. This is called “saccadic masking” and without it, your life would be like watching a constant movie that’s filled with a shaky hand-held camera.

Argyria is a condition that turns a person’s skin a bright blue color. It’s caused by chronic exposure to silver.

You can have brain surgery and not feel any pain because the brain itself does not have any pain receptors. 

There’s a genetic disease called Laron Syndrome that results in short stature, long life expectancy, and near immunity to cancer and diabetes.

It takes seventeen muscles to smile and forty-three to frown.

A hungry sea lion pup once walked into a fancy San Diego restaurant, and sat down at a prime table with an ocean view.

Stress literally kills your brain. Studies have found that months of exposure to stress can permanently destroy neurons in your brain, which affects learning, impulse control, reasoning, and memory.