The human nose is very smart, but why is it so hard to smell in sleep?

The sense of smell is innate, between the ages of 10 and 60 is the most sensitive, after the age of 60, the ability to perceive smells begins to decline, and by the age of 80, the sense of smell is almost half of that of the 30-year-old. This loss of smell is not a cause for concern, and it is a physiological aging process. Before the age of 60, if you can't smell the smell, you should look for the cause, such as smoking, excessive drinking, blocked nose or taking certain drugs (such as drugs for hyperthyroidism).

To rule out these conditions, it is necessary to consider the cause of disease.

Human sense of smell is sensitive, can keenly feel the aroma of food (80% of the flavor of food is contributed by the sense of smell), so that you can eat Ma Ma fragrant, the digestion, absorption and utilization rate of nutrients are improved, and the body is naturally better。In addition, a sensitive nose proves that you are not linked to the above diseases, and the probability of entering the ranks of birthday stars is significantly increased. Therefore, it is imperative to strengthen conservation measures:

andWhen all kinds of rhinitis, sinusitis, and nasal polyps, keep the nasal passages unobstructed. Pay attention to nasal hygiene, avoid habits such as digging indiscriminately, picking your nostrils or cutting your nose hair. Good oral hygiene can reduce the occurrence of olfactory disturbances, as the mouth and nose are connected.

Heat preservation. Cold is one of the three "natural enemies" of the nose, and the temperature drops sharply in autumn and winter, and the cold air will have an adverse effect on the nasal mucosa and its physiological functions. If the nasal mucosal blood vessels constrict when exposed to cold, it can cause ischemia and nutritional disorders, and also weaken the movement of mucosal epithelial cilia, resulting in a decrease in the purification and defense function of the nose, and viruses and bacteria can invade the respiratory tract.

Therefore, in the cold season, attention should be paid to heat preservation, such as wearing masks, eating hot dishes, hot meals, drinking hot tea or hot water, etc.

Maintain humidity。Another "natural enemy" of the nose is dryness, as the nasal cavity remains moist in order to perform its function. If the inhaled air is too dry, the nasal mucosa will secrete a large amount of fluid to moisten the nasal cavity, and the ciliary movement of the mucosal epithelium will be weakened, and the nasal function will be reduced.

Wearing a mask, drinking plenty of hot water, and inhaling hot air are all good ways to moisturize the nasal mucosa.

Avoid long-term inhalation of traffic exhaust fumes, which contain toxic chemicals, such as sulfur dioxide and nitride, which can easily lead to damage to the nasal mucosa and eventually induce olfactory disorders.

Because our minds think less frequently in our sleep, we don't feel anything.

Because during sleep, people's five senses are basically turned off, and only the brain is the most active.

In sleep, people are in a state of emptiness, and many bodily functions are resting.

This is because the nerves are turned off while sleeping.

In sleep, human consciousness is very light, and people have no consciousness to smell something at all.

It may be that people use some unique imagination when they sleep.

I think there are a lot of reasons why I did this, you think.

Because it's just a dream, I think it's the same as what I want to do.