In one day, adult lungs move about 10,000 litres of air.
11
If you stop working out, it takes twice as long to lose strength than it took to gain it.
16
Every hour one billion cells in the body must be replaced.
17
Crushed cockroaches can be applied to a stinging wound to help relieve the pain.
31
If you are cold you are more likely to be hungry because you use energy to keep warm.
144
Your body is creating and killing 15 million red blood cells per second.
50
Your skin is actually an organ.
88
