Why do southerners like to sleep in cold rooms?

Because the temperature in the south is relatively high, and especially in summer, it is very hot in the south, so southerners may not be able to sleep in this particularly hot environment.

They can only fall asleep when the room is cold, so it depends on their situation. Generally speaking, many southerners are afraid of heat and like to sleep in cold rooms.

The colder the weather, the easier it is to fall asleep, because it is related to the shortening of sunlight exposure time. The pineal gland of the human body secretes a kind of protein called melatonin, which can cause drowsiness; When the light is dark, the secretion of this substance tends to increase. This is why you are particularly sleepy when it is cold. So everyone likes to sleep and doze off in winter.

The reasons why sleeping in a cold environment is more comfortable are:

1, have a good sleep

The cold environment can make us sleep more deeply. During REM, our brain will process all the information for us in one day. This process is very important. However, when the temperature is too high, it is difficult for us to fall asleep, and it is easier to wake up because of poor sleep.

2. Reduce the risk of certain diseases.

Sleeping in a cool room can reduce our chances of suffering from metabolic diseases such as diabetes. It can also improve our growth hormone level and help prevent heart disease, depression and obesity. The increase of melatonin also reduces the risk of Alzheimer's disease or Alzheimer's disease.

Step 3 eliminate stress

The increase of temperature will not only affect the production of melatonin in the body, but also cause our body to release more cortisol, which is a stress hormone.

In the case of increasing pressure, it will naturally affect our sleep. Because of this, when the indoor temperature begins to drop, our body's cortisol level will be in a low state, which means that we will not have so much pressure and naturally fall asleep better.

4, help to prevent insomnia

Mammals have evolved a series of behavioral and neural mechanisms to coordinate thermoregulation and sleep cycle. No matter day or night, sleep attacks and core hypothermia occur at the same time.

However, last year, a research report published by the Imperial College London and the British Dementia Institute in London showed that temperature changes can also affect sleep, especially the increase of temperature. On the contrary, lowering the temperature can help you fall asleep faster. In fact, in all mammals, sleep seems to be essential and keeps pace with the circadian rhythm.

When the temperature of our core and brain drops rapidly, we are most likely to choose to fall asleep. If we are out of this body cooling cycle, we will lose sleep.

5. Keep people young.

Maybe you already know that dark environment can help the body produce melatonin, but in fact, it can also promote the production of melatonin when we sleep in a low temperature environment. This is very important because melatonin is thought to directly affect our sleep. On the other hand, it is also an antioxidant, which means that it can provide anti-aging hormones for the human body.