13. A sunburn is the result of your cells committing suicide.
Contrary to popular belief, a sunburn isn’t the direct result of your cells being damaged by the sun.
Instead, your skin cells’ DNA was damaged by the sun.
Your body tells the cells to kill themselves in order to prevent skin cancer from developing, which is why your skin then starts to peel.
Pretty metal, right?
14. If a pregnant mother suffers organ damage, the fetus sends stem cells out to repair it.
Of course, that same fetus sometimes tends to make life pretty unpleasant for the expectant mother…and just wait until they’re actually born!
Still, this is a lovely fact, no?
15. Some people develop teratomas, which are tumors...but they're not just any ol' tumor.
Teratomas can be found anywhere in the body, although they are most often found in the ovaries, testicles, or tailbone.
What’s extra creepy about teratomas is what can sometimes be found inside them.
Some teratomas contain hair, skin, or teeth.
But some are a bit more complicated and can actually contain bones, eyeballs, or a rudimentary beating heart. Yiiiiikes.