Do you know yourself?

Homo sapien is the one of the newest species to evolve it is not more than a few million year old and taking this time on universal calendar being 14 billion years it's merely few minutes we are there in existence. 
Each of our  bodies are a miracle; it's amazing they work the way they do, day in and day out. If you thought what our bodies could do before, once youbread this list of insane facts about the human body, you'll be in awe
1.) The average person produces
enough saliva in their lifetime to fill
2 swimming pools.
2.) A full head of human hair
is strong enough to support 12 tons

3.) Don't stick out your tongue if you want to hide your identity. Similar to fingerprints, everyone also has a unique tongue print!
4.) you get a new stomach lining every three to four days? If you didn't, the strong acids your stomach uses to digest food would also digest your stomach.
5.) This will really make your skin crawl: Every square inch of skin on thebhuman body has about 32 million bacteria on it, but fortunately, the vast majority of them are harmless.
6.) Considering all the
tissues and cells in your body, 25 million new cells are being produced each second. That's a little less than the population of Canada - every second !
7.) From the age of thirty,
humans gradually begin to
shrink in size.
8.)The areas of the body that
swell during intercourse are the genitals of both partners, the breasts and also the inner section of nose.
9.) A human being can
look forward to having sex an average of 2,580 times with five different partners.
10.) When we go to sleep
and enter REM (Rapid Eye
Movement),our bodies become
completely paralysed as areas of
the brain that control movement
are de-activated. It is this that
stops us falling out of bed.

The following data provides details about how we are different from the other know species that evolved parallel to us.
- Genome - wide variation from one human being to another can be up to 0.5% ( 99.5% similarity )
- Chimpanzees are 96% to 98% similar to humans , depending on how it is calculated . ( source)
- Cats have 90% of homologous genes with humans , 82% with dogs,80% with cows , 79% with
chimpanzees , 69% with rats and 67% with mice . (source )
- Cows (Bos taurus ) are 80%
genetically similar to humans
(source)
- 75% of mouse genes have
equivalents in humans ( source), 90% of the mouse genome could be lined up with a region on the human genome ( source) 99% of mouse genes turn out to have analogues in
humans ( source)
- The fruit fly (Drosophila ) shares about 60% of its DNA with humans
(source) .
- About 60% of chicken genes correspond to a similar human gene .