Humans shed about 600,000 particles of skin every hour. You may not think much about losing skin if yours isn’t dry or flaky or peeling from a sunburn, but your skin is constantly renewing itself and shedding dead cells.
The tooth is the only part of the human body that can't repair itself. If you've ever chipped a tooth you know just how sadly true this one is. The outer layer of the tooth is enamel which is not ... tissue. Since it's not alive, it can't repair itself, leaving your dentist to do the work instead.
You get a new stomach lining every three to four days. The mucus-like cells lining the walls of the stomach would soon dissolve due to the strong digestive acids in your stomach if they weren't ... ulcers know how painful it can be when stomach acid takes its toll on the lining of your stomach.
You could remove a large part of your internal organs and survive. The human body may appear fragile but it's possible to survive even with the removal of the stomach, the spleen, 75 percent of the ... pelvic and groin area. You might not feel too great, but the missing organs wouldn't kill you.
Your brain uses 20% of the oxygen that enters your bloodstream. The brain only makes up about 2% of our body mass, yet consumes more oxygen than any other organ in the body, making it ... related to oxygen deprivation. So breathe deep to keep your brain happy and swimming in oxygenated cells.
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