As the saying goes, "Three inches of longevity, four inches of worry-free", what do three inches and four inches mean? Is it reliable to live a long and worry-free life?

Cun is a smaller unit of length, which is more common in daily life. The word inch often appears in popular sayings, such as "a ruler is shorter, an inch is longer", "an inch "Time is worth an inch of gold, an inch of gold cannot buy an inch of time", etc. These common sayings are relatively easy to understand. However, some friends do not know the meaning of the following sentence: "Three inches of longevity, four inches of worry-free".

"Three inches of longevity, four inches of worry-free" can be interpreted literally. Three inches means longevity and four inches means worry-free. However, what do three inches and four inches mean? Why longevity? And why worry-free? This is the key point that everyone collects. This article will talk about it in detail. After reading it, everyone will have the answer.

According to the author's detailed interviews with older people and common folk sayings, the saying "three inches of longevity and four inches of worry-free" mainly refers to the height of the pillow when sleeping. That is to say, if you sleep When the height of the pillow is three inches, it is easy to live a long life. If the height of the pillow is four inches, then there is no worry and it is easy to fall asleep.

How high is three inches or four inches? According to the current measurement unit, three inches is 10 centimeters and four inches is 13.33 centimeters.

However, common sayings come from previous social processes, so they need to be based on previous units of measurement.

However, there is a problem. In the past, one inch was different in ancient times. For example, one inch in the Song Dynasty and Yuan Dynasty was equal to 3.07 centimeters. In the Ming Dynasty, one inch was equal to 3.11 centimeters. In the Qing Dynasty, one inch was equal to 3.11 centimeters. It became 3.2 centimeters again.

The current inch is basically equal to 3.33 centimeters. It can be seen that the previous inch was slightly shorter than the current inch.

Back to the point of this article, if 3 inches is calculated as 10 centimeters, will it be comfortable to sleep on a 10 centimeter pillow?

When you sleep with your head on the pillow, the middle part will be recessed. Under normal circumstances, if it is 10 cm, the pillow area may be only about 5-6 cm after the pillow is down (this refers to Today's pillows, in the past there were pillows made of wood, pillows made of jade, etc., cannot be recessed).

Some articles say that a three-inch pillow is the perfect standard angle between the human head, cervical vertebrae, and the bed surface. Stiff neck or other discomfort will not occur if you sleep on a three-inch pillow for a long time. , sleep quality is good, and you can live longer.

When the height of the pillow is increased to four inches, people’s heads will feel more comfortable when sleeping on it. After lying on it, they will no longer think about troubles and will fall asleep quickly. As the saying goes, "sit back and relax." , which means that you can sleep comfortably on a high pillow, and four inches is basically about 13 centimeters, which already belongs to the category of high pillows.

In the actual sleeping process, can a pillow height of more than 10 cm really make people live longer? Does it make people worry-free? The answer is not necessarily completely correct.

Because different people have different preferences. Some people like high pillows, some like low pillows, and a small number of people don’t like pillows when sleeping.

For those who like low pillows, if the pillow is higher than 10 cm, they will feel uncomfortable and unable to sleep.

For those who don’t like sleeping on pillows, they are even more uncomfortable with pillows with a height of 10cm.

When a person sleeps uncomfortable or even unable to sleep due to a pillow that is too high, longevity is out of the question. In addition, instead of being worry-free, he will become more worried and suffer from insomnia.

From the perspective of adults and children, adults may not care about pillows above 10 cm. If you are a child, forcing you to sleep on a high pillow will not only prevent you from living a long and worry-free life, but may also be detrimental to your health. With growth, stiff neck will often appear, and the neck will also feel uncomfortable.

Sleeping is originally a time to relax and rest. As for the height of the pillow, it is the best that you feel is comfortable. This does not necessarily follow the saying of "three inches of longevity, four inches of worry-free". This saying expresses This means that it does not apply to everyone. The author also suggests that the pillow height at which you feel more comfortable sleeping is the height at which you will live longer and be worry-free.

What do you think about this? How high is your pillow when you sleep?