A man's beard grows fastest when he anticipates sex.
239
It has been scientifically proven that stroking a cat can lower one's blood pressure!
456
The human sigh acts as a physiological reset button.
23
When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
23
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127
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
After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139