Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
The human brain doesn't stop developing until about 25 years old.
102
Within three days of death, the enzymes that once digested your food begin to eat you.
22
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127
In 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.
199
If you are cold you are more likely to be hungry because you use energy to keep warm.
144