1-. We're about 1 inch taller in the morning than in the afternoon. That´s because during the normal activities the cartilage in our knees and other areas slowly compress, but when we go to sleep the cartilage goes back to normal. In fact, according to Nasa research, astronauts gain up to two inches in height once they are freed from the gravitational pressure of Earth.

2-. We can´t tickle ourselves. The simplest way to explain this is that your brain predicts the sensation and this prediction is used to cancel the response of other brain areas to the tickle.

3-. We can survive almost a week without food, but only 48 hours without water.

4-. The freckles are caused by an irregular production of melanin, the substance that pigments our skin, hair and eyes.

5-.It is impossible swallow and breathe at the same time.
(I'd beth you're trying it right now)

6-.Humans are the only specie able to cry because of emotional motives.

That's it people, hope you liked it.
Heart if you didn't know some of the facts, I would appreciate it.
If you speak or understand spanish, you should go to see the Youtube channel XpressTV. It has a lot of interesting videos, I took the idea from there.

Goodbye y'all.
Moi Moi.