A man's beard grows fastest when he anticipates sex.
239
After an 11 year study, cell phones were shown not to increase chances of getting cancer.
14
An average heart beats 100,000 times a day, pumping some 2,000 gallons of blood through its chambers. Over a 70-year life span, that adds up to more than 2.5 billion heartbeats.
73
The human brain doesn't stop developing until about 25 years old.
102
Most dreams last only 5 to 20 minutes.
79
When you look up at the blue sky and see white dots flying around, you’re actually seeing your own white blood cells.
30
Falling in love raises levels of nerve growth in a person's brain for about a year and can improve their memory.
39
It has been shown that caffeine causes headaches when stopped suddenly and can cause morning headaches that are relieved by a dose of caffeine.
101