Why?

2021-11-17 21:00:04 WHY can't people breathe and swallow at the same time?

The complex structure of the adult vocal apparatus does not allow humans, unlike animals, to breathe and swallow at the same time.

Behind the root of the tongue is the supraglottic cartilage (epiglottis). It closes the entrance to the larynx when a food lump is swallowed, then opens to allow air to pass into the larynx and then through the respiratory tract. Открыть/Комментировать

2021-11-17 20:00:07 @gifs_en is the most scandalous Telegram channel, gathering the most disgraceful photos and videos from all over the Internet!

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2021-11-17 17:00:04 WHY do worms crawl out after it rains?

Roughly 50 years ago, biologists believed that earthworms crawl to the surface after it rains to avoid drowning in their own burrows. However, this theory was rejected as they breathe through their skin, and a wet environment is ideal. There are several hypotheses at this point:

For easy migration: it is easier for them to travel distances by crawling on a wet surface than by creating passages in the soil.

Escape from the enemy: raindrops hitting the ground are like vibrations from the movement of predators such as moles. Открыть/Комментировать

2021-11-16 20:00:05 WHY are there lines on the palm?

The palm folds, serve to clench and unclench the fist, grasp and hold various objects in the hand.

Also, these lines are necessary so that the skin on the hands is not stretched, but elastic and you can perform any movements. Открыть/Комментировать

2021-11-16 15:00:04 WHY haven't humans tamed zebras?

As early as the 19th century, colonizers thought of domesticating zebras in Africa to avoid transporting horses to the continent. Zebras are also resistant to diseases carried by the tsetse fly.

Yet unlike horses, which are carefree, zebras are in a constant state of stress, running away and even sometimes fighting savannah predators. Cornered, a zebra can beat a lion to death. Открыть/Комментировать

2021-11-15 21:30:01 WHY are horses' legs not tired when they sleep standing up?

The unique bone and ligament system of the horse's leg ensures that they are connected in such a way that a stationary standing horse's legs can support its weight without the slightest muscle strain. Therefore, no energy has to be expended by the horse during sleep.

It can be said that their knee is equipped with a special mechanism that secures the joints in a stationary position. Открыть/Комментировать

2021-11-15 10:06:23 WHY don't ducks get wet or freeze in winter?

A duck applies and distributes a special fatty grease, which is secreted by the coccygeal gland, all over its body. It keeps them dry.

As for the extra warm fur and subcutaneous fat, it keeps the cold from penetrating the duck's body. That's why ducks are warm in any frost and can take off even after long "water procedures" as their feathers stay dry. Открыть/Комментировать

2021-11-14 23:20:02 WHY can't a person sleep standing up?

The human body tends to be far too flexible to sleep standing up. As we sleep, some brain functions literally shut down.

Constant work of the muscles, muscle receptors and vestibular apparatus during sleep is impossible.

Therefore, a person who falls asleep standing up will immediately fall down Открыть/Комментировать

2021-11-14 17:00:04 WHY does Louis Vuitton burn unsold bags?

Louis Vuitton makes some of the most expensive handbags in the world. Remarkably, they never put their goods on sale.

In order to maintain their status as an expensive brand, the company burns all unsold bags so that no one can buy them at a discounted price.

According to statistics, Louis Vuitton is the most counterfeited brand in the world. Открыть/Комментировать

2021-11-13 21:00:02 WHY does chocolate turn white?

Many people are wary of this white coating that resembles mold. But it's not mold and it won't harm your health.

If not stored properly, the oil in the cocoa bean protrudes onto the surface of the chocolate product and turns a whitish color.

This could be proof that the chocolate really does contain cocoa beans and not their substitutes. Открыть/Комментировать