It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
32
The human brain is very soft, having a consistency similar to soft gelatin or firm tofu.
13
Fingers prune underwater not because of them absorbing the water or washing away the oil, but because of an evolutionary trait caused by the brain to enhance the grip of your fingers underwater.
24
It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
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
