When your face blushes, the lining of your stomach turns red, too.
154
The average sperm cell swims at 8 inches per hour.
4
Common pesticides such as roach, termite, and flea insecticide can be found in the bodies of the majority of Americans.
11
Crying literally alleviates stress and uniquely allows humans to decrease feelings of anger and sadness.
24
Falling in love raises levels of nerve growth in a person's brain for about a year and can improve their memory.
39
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
Men have larger hearts; women's hearts beat faster.
77
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