9 obvious facts you might not know

There is a new interesting one on Reddit thread, in which users talk about facts that seem obvious - but few have thought about them or googled them on purpose. We made a selection of the most popular and weirdest.

1. In a calm state, the tongue does not lie in the mouth, but is raised to the palate (with the exception of people who breathe through the mouth). — PlatonicTroglodyte

2. In female elephants, the chest is very similar to that of a human. Yes, now you won't be able to see it either. — breastronaut

3. Many cats intolerance lactose. Therefore, they are actually very bad from tasty milk, but they do not understand the reason. — jordanstevenson1134

4. By the statement that carrots help vision, we are obliged propaganda of the Second World War. The British wanted to hide their new radar technology from the Germans and actively spread the rumor that their pilots owed their good eyesight to carrots. Carrots were chosen because it is almost the only vegetable that was in abundance in England. While the vitamins in carrots can actually improve your eyesight, you need to eat incredible amounts of it for a tangible effect. —

5. No, hair and nails do not grow after death: they need oxygen to grow (and therefore a beating heart). Visually, it may seem so, because the skin begins to dry out and exposes the roots of nails and hair. — Ox_Box

6. If Heinz ketchup in a glass bottle does not want to pour, you just need to gently knock a couple of times on the convex number 57 on the package: this is a design feature. — faceintheblue

7. Water always boils at the same temperature - the intensity of boiling and the size of the bubbles do not matter. — Mcreeper51

8. Sometimes calculate the percentage the number is easier if you swap the numbers. 8% of 25 is the same as 25% of 8. The second is much easier for many to decide - and they won't have to get a calculator. — wlwlvr

9. If you edit a post on Reddit within 3 minutes of posting, the modified icon will not appear next to it. But the edits after this time can no longer be hidden. — SeaOfDinks