1. At birth the human body has 300 bones, but at death we have 206.
2. When you blush, the inside of your stomach does too.
3. Astronauts can grow up to 2 inches taller when in space.
4.  Humans are actually bio luminescent, it’s just that the light that is produced can’t be seen by the human eye.
5. Your brain can actually survive about 5-10 minutes WITHOUT oxygen.
6. The brain begins to eat itself in extreme cases of starvation.
7. Your heartbeat will actually sync with the rhythm of the music you’re listening to.
8. Your small intestine is roughly about 23 feet long.
9. There are more than 10,000 blood vessels in your body.
10. You are actually taller in the morning then when you are at night.
11. You can’t breathe and swallow at the same time. (go ahead and try it)
12. If you were to smooth out all the wrinkles in your brain, it would be as flat and the same size as a regular pillow case.
13. If you were to put metal in your stomach acid, it would begin to dissolve; if you were to touch it, it would burn right through your skin.
14. On average, you carry up to 4 pounds of bacteria on your body.
15. Humans can’t digest grass, in order to do that we’d have to have multiple stomachs.

Facts courtesy of: https://allthatsinteresting.com/human-body-facts 

Pictures Courtesy of: Google.com