Some false facts that many people believe

Running makes you healthy but you should always remember that more doesn't always mean better. Some researches proved that moderate exercises do good for our heath and too much running harms our body. So, if you love running don't take long distances.

It was believed that this planet and its sky are red. However, there are no precise data about its real colors. Color balance is very subjective and there are photos that showed Mars as a red planet with a pink sky and photos that proved it's more green and blue than red.

Milk contains calcium, which is very important for the health. However, it is very difficult for our organism to absorb that kind of calcium because of the acidity of milk. So, for healthy bones you'd better eat fish, nuts and beans that are also rich in calcium and don't forget about the sources of vitamins D and K.

What comes to your mind when you hear a word "desert"? A lifeless, vast and hot place. Actually, a desert is a place that receives too little precipitation. In this respect Antarctica is the largest desert in the world.

Did you also believe that a black hole is a hole? It turned out that it is not so. Black holes are space objects that have a very strong gravity and there are no objects that can escape from inside of it. They are invisible to human eyes but can be observed with space telescopes.

The brain of a sleepwalker is unbalanced in their sleep. Some parts are awake and active while others are asleep. Scientists say it is more dangerous to let a person sleepwalk, while they can hurt themselves in that state. The only reason why it can be to be dangerous to wake up a sleepwalker is their feeling of disorientation at the moment you wake them up.

Actually, bulls are colorblind and don't see the difference between red and green colors. So, they react to the movement and not the color. It is also worth noting that for a bull fighting very aggressive breeds are chosen.