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
One human hair can support 3 ounces.
191
The human brain doesn't stop developing until about 25 years old.
102
Your thumb is about the same size as your nose.
124
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
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
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