What is the difference in health effects between opening windows for ventilation and not opening them? There are some tips for opening windows for ventilation in winter!

What is the difference in health effects between opening windows for ventilation and not opening them? There are some tips for opening windows for ventilation in winter!

Cold weather in winter

Many people will choose to close the doors and windows

Stay at home

But some people

No matter how cold it is, I will insist on opening the windows for ventilation every day.

Open windows frequently for ventilation and keep doors and windows closed

What differences will there be over time?

It is not advisable to completely close the doors and windows in winter

If you close the doors and windows completely in winter, you are actually keeping the cold out of the windows while keeping the polluted air inside the house.

Experiments have shown that if three people are allowed to stay in a 10-square-meter room with doors and windows closed at the same time, the temperature in the room will rise after three hours, and the amount of carbon dioxide, bacteria and dust will increase.

If you inhale such air for a long time, you may experience symptoms such as headache, dizziness, mental depression, poor sleep quality, etc. In severe cases, it may induce or aggravate cardiopulmonary diseases such as coronary heart disease, chronic bronchitis, chronic obstructive pulmonary disease, etc., which is very harmful to your health.

Open windows for ventilation when the weather is clear. This is the best and most effective way to increase the oxygen content in indoor air.

There are many benefits to opening windows for ventilation

  • Reduced risk of depression

  • The study showed that compared with elderly people who did not open windows for ventilation, opening windows for ventilation more than 5 times a week was significantly associated with a 33% lower likelihood of experiencing depressive symptoms in the elderly.

    Among the elderly population in China, there is a significant linear correlation between high frequency of window opening for ventilation and a reduced incidence of depressive symptoms in the elderly.

  • The brain is more comfortable

  • Long-term lack of ventilation will lead to insufficient oxygen in the room. If you stay in such an environment for a long time, you are likely to suffer from dizziness, headaches, etc. due to lack of oxygen, and even cause other diseases.

    Through ventilation, on the one hand, harmful, polluted air and various pathogenic factors are expelled outdoors, and on the other hand, more beneficial substances such as oxygen and negative ions can be obtained from the outdoors, improving the functions of the human immune system, respiratory system and central nervous system, and regulating the excitability of the cerebral cortex.

  • Low risk of respiratory disease

    As winter approaches, the air becomes relatively dry, and the mucous membranes of the human nose, throat, etc. lose moisture, the defense ability is reduced, and it is easy to be infected by various pathogens.

    Opening windows regularly to ventilate and keep indoor air circulating can reduce the concentration of pathogens in the house, reduce the chance of contact between people and pathogens, and thus prevent the occurrence of diseases.

There are some things to pay attention to when opening windows for ventilation

  • Open windows for ventilation at least twice a day

    Opening windows for ventilation when the weather is clear and allowing oxygen-rich air from outside to enter the room is the most effective way to increase the oxygen content in indoor air.

    Open the windows twice a day, at 9:00-11:00 and 14:00-16:00 . There are relatively fewer vehicles during these two time periods, and there are fewer air pollutants. Open the windows for about 20 minutes each time.

    In addition, it is best to open windows for ventilation on lower floors and avoid rush hours in the morning and evening , because exhaust gas emitted by cars during this period will deteriorate the air quality.

  • Each window should be opened for no less than 15 minutes

    Each time you open the window for ventilation, the time should be no less than 15 minutes, 20-30 minutes is appropriate. If you only open the window a crack, the ventilation time needs to be increased to 30-60 minutes.

  • Open windows smaller when the temperature is low

    When there are many people indoors or during the cold season, you should open the windows for ventilation. If the temperature is low at this time, you can leave a little gap in the windows to ventilate without being too cold.

  • Opening windows for ventilation is best for convection

    The best ventilation method is to create convection, such as opening the farthest windows and doors in the home to allow flowing air to pass through the entire room.

Friendly reminder

Avoid being blown by the wind when sweating or wearing thin clothes in winter

It is easy to induce cold

Do not let the indoor temperature drop below 16°C by opening windows.

The room temperature should be kept between 18 and 23 degrees Celsius.

There are many benefits to opening windows for ventilation

  • Reduced risk of depression

    The study showed that compared with elderly people who did not open windows for ventilation, opening windows for ventilation more than 5 times a week was significantly associated with a 33% lower likelihood of experiencing depressive symptoms in the elderly.

    Among the elderly population in China, there is a significant linear correlation between high-frequency window opening for ventilation and a reduced incidence of depressive symptoms in the elderly.

  • The brain is more comfortable

    Long-term lack of ventilation will lead to insufficient oxygen in the room. If you stay in such an environment for a long time, you are likely to suffer from dizziness, headaches, etc. due to lack of oxygen, and even cause other diseases.

    Through ventilation, on the one hand, harmful, polluted air and various pathogenic factors are expelled outdoors, and on the other hand, more beneficial substances such as oxygen and negative ions can be obtained from the outdoors, improving the functions of the human immune system, respiratory system and central nervous system, and regulating the excitability of the cerebral cortex.

  • Low risk of respiratory disease

    As winter approaches, the air becomes relatively dry, and the mucous membranes of the human nose, throat, etc. lose moisture, the defense ability is reduced, and it is easy to be infected by various pathogens.

    Opening windows regularly to ventilate and keep indoor air circulating can reduce the concentration of pathogens in the house, reduce the chance of contact between people and pathogens, and thus prevent the occurrence of diseases.

There are some things to pay attention to when opening windows for ventilation

  • Open windows for ventilation at least twice a day

    Opening windows for ventilation when the weather is clear and allowing oxygen-rich air from outside to enter the room is the most effective way to increase the oxygen content in indoor air.

    Open the windows twice a day, at 9:00-11:00 and 14:00-16:00 . There are relatively fewer vehicles during these two time periods, and there are fewer air pollutants. Open the windows for about 20 minutes each time.

    In addition, it is best to open windows for ventilation on lower floors and avoid rush hours in the morning and evening , because exhaust gas emitted by cars during this period will deteriorate the air quality.

  • Each window should be opened for no less than 15 minutes

    Each time you open the window for ventilation, the time should be no less than 15 minutes, 20-30 minutes is appropriate. If you only open the window a crack, the ventilation time needs to be increased to 30-60 minutes.

  • Open windows smaller when the temperature is low

    When there are many people indoors or during the cold season, you should open the windows for ventilation. If the temperature is low at this time, you can leave a little gap in the windows to ventilate without being too cold.

  • Opening windows for ventilation is best for convection

    The best ventilation method is to create convection, such as opening the farthest windows and doors in the home to allow flowing air to pass through the entire room.

Friendly reminder

Avoid being blown by the wind when sweating or wearing thin clothes in winter

It is easy to induce cold

Do not let the indoor temperature drop below 16°C by opening windows.

The room temperature should be kept between 18 and 23 degrees Celsius.

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