Is there something evil in the north window after opening it at night in winter?

In winter, when you sleep at night, you can easily catch a cold when you have the window open.

Keep warm when you sleep at night and open the window. In order to avoid illness due to the sudden drop in room temperature after opening the window. When opening a window, only a small slit can be opened to create air convection.

If you have a cold at home, you should carefully open the window. It should be noted that the indoor temperature should not drop below 16 due to the opening of the window, and it is best to control it at 16 22.

Additional Information: Precautions for Opening Windows in Winter:

Try to open the windows as much as possible when sleeping in winter, but avoid convective winds and don't let the wind blow directly on your body. As long as the kitchen uses gas, the windows should be opened, not just when stir-frying, because the exhaust fumes of gas can easily accumulate in the kitchen and spread to the living room and bedroom.

Under normal circumstances, a person exhales 22 liters of carbon dioxide per hour, and if the ventilation is not good, the carbon dioxide exhaled by the human body will accumulate indoors and affect health. In winter, when sleeping at night, opening the window for ventilation can enable people to obtain more "air vitamins", that is, negative ions, which can increase the body's resistance and prevent diseases.

It's so cold in winter that you should not open the windows.

Therefore, it is recommended that you can open the windows for ventilation every day during the day and close them when you go to bed at night. In this way, the air in the home will also be very refreshing, understand?

It should not be that the window is not badly sealed, on the contrary, it is possible that it is well sealed.

The water generated on the glass of the window should be condensation.

Because the indoor temperature is high, the humidity is high, and the outdoor temperature is low, the indoor hot air will condense when it meets the window, so the condensation is generated, it may be that your home uses a humidifier in order to avoid the dryness after heating.

Water droplets are formed by the liquefaction of water vapor, and in winter, when the hot water vapor in the room meets the cold window glass, it will liquefy into small water droplets that adhere to the glass. So in winter, the small water droplets on the window glass are on the indoor side. If there is no temperature difference between the two sides of the glass, the water vapor on both sides will not liquefy due to cold, and there will be no small water droplets, so the small water droplets will only appear on the glass that is separated from the outside.

In fact, the conditions for the formation of small water droplets are not the indoor temperature or the outdoor temperature, but the temperature of the water vapor is higher than that of the glass. If the outdoor temperature is high and the indoor temperature is low, the water droplets will form on the outdoor side.

The cold is too heavy, and the wind hurts the nerves

That's great, it helps with air circulation, and don't close the windows tightly.

Yes, but you have to turn it on a little smaller, just ventilate it properly, so that you can sleep comfortably at night, and breathe smoothly, that's how I drop.

If you really want to breathe, don't let the wind blow on your head.

Okay... Just don't face people.

The cold evil is too heavy, and it is easy to catch a cold. Feeling the wind chill outside.

Of course, it is necessary to ventilate, otherwise the air will not be fresh.

Yes, but don't blow at people, you'll have a stroke.

You can open it a little bit to keep it ventilated and good for your body, but if you open it too much, you can easily catch a cold when you sleep at night, so it's not good.

It is necessary to open the windows to convect the indoor air, but when you sleep, you should close them, one to prevent colds, and the other is to prevent thieves, there are too many thieves now.

Turn it on before going to bed, and leave a little room to keep the air circulating when you sleep, which is good for the body.

It's better to open a little window, the air is more circulating, it's good for the body, as long as you don't feel too cold, if you close the window, it's not good for the body.

The windows should be opened, but if it feels too cold, you can close the windows a little smaller and leave only a slit for ventilation.

Opening windows can make the indoor air circulated, keep the indoor air fresh, so that the oxygen content in the air is sufficient, and people will sleep more comfortably.

If the doors and windows are tightly closed, the indoor air circulation is poor, resulting in air pollution, which can easily cause symptoms such as dizziness, sweating, dry throat, chest tightness and discomfort. This can affect the quality of sleep.

Just turn it on, don't take too long, and turn it off when you sleep.

It is necessary to open the gap for ventilation.

It's necessary, but be careful not to catch a cold, just turn it on!

As long as the windows are not closed too tightly.

The weather is relatively cold in winter, if you sleep and open the window, there may be a cold situation, it is recommended that you do not open the window when sleeping in winter, if you want air circulation, you can open a crack on the upper side of the window.

In winter, the outdoor temperature is very low, and you will catch a cold when you open the window, not to mention that the clothes will dry slowly in the house, unless you are not afraid of the cold, and the clothes are not in a hurry to dry. Your own habits of life cannot be changed by others

It's okay not to be afraid of the cold, but it's okay to be afraid of freezing things in the room, such as water pipes, and nothing else.

It must be that you don't snow or freeze in winter, and then you're afraid that you won't be able to get up in the morning.

If you have heating at home or are not afraid of the cold, you can sleep with the windows open.