It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127
If every muscle in your body could pull in one direction, you could lift nearly 25 tons.
12
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
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
32
In Ancient Greece, small penises were desirable, and big ones were for ‘old men and barbarians’
22
Staying awake for 17 hours is the same for your body as drinking 2 glasses of wine.
193
You see your nose at all times, your brain just chooses to ignore it.
30
In one day, adult lungs move about 10,000 litres of air.
11