7 Incredible Facts About The Human Body

Stomach - The human stomach contains a digestive acid that is so strong it can even melt zinc.
Testicles - A man can produce 10 million new sperm cells each day from his testicles which is enough to repopulate the entire planet in just 6 months.
Human Saliva - In our lifetime our body produce enough saliva that can fill two Olympic size swimming pools.
Lungs - Our lugs have more than 300,000 minute blood vessels, if we laid out those vessels we could have a total length of 1,500 miles.
Body Heat - In just 30 minutes our body makes enough heat to boil four pints of water.
Heart - The human heart generates its own electrical pulse, so if we remove it from our body, it will continue to beat for a limited span of time.
Human Bones - Our bones are four times stronger than concrete and 1 cubic inch of bone can withstand a weight of 8.6 tones.

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