Due to the angle at which the optic nerve enters the brain, staring at a blue surface during sex greatly increases the intensity of orgasms.
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It is almost impossible to sneeze with your eyes open. It is a defense mechanism that has evolved to protect our eyes from bacteria and debris.
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The focusing muscles of the eyes move around 100,000 times a day. To give your leg muscles the same workout, you would need to walk 80km (50 miles) every day.
21
Research indicates that babies who suck on pacifiers are more prone to ear aches.
21
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
It takes 17 muscles to smile, 43 to frown.
65
Crying literally alleviates stress and uniquely allows humans to decrease feelings of anger and sadness.
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