Should windows be closed when sleeping in winter?

　　Winter nights are cold, and the cold wind howls outside the window. Many people struggle with whether to open or close the windows while sleeping. Should windows be closed when sleeping in winter? How to create a comfortable sleeping environment in winter?

Should windows be closed when sleeping in winter?

　　When the temperature is below 0℃ or strong cold wind blows, the windows need to be closed. The intrusion of cold wind will cause the indoor temperature to drop sharply, which can easily cause colds and joint pain. Especially during sleep, the body's resistance is weak and it is more susceptible to cold air. When the temperature is around 5℃ and there is no wind, there is no need to close it completely, leaving a gap of 5-10 cm. It can prevent indoor air from being polluted, prevent cold wind from blowing directly to the body, and maintain air circulation.

How to create a comfortable sleeping environment in winter

　　1. Control indoor temperature

　　Stabilize the temperature at 18-22°C. In this range, the human body feels comfortable and will not curl up due to overcoldness or overheating and sweat, helping to quickly enter deep sleep.

　　2. Adjust air humidity

　　Use a humidifier to keep the humidity at 40%-60%, or put a basin of water indoors. Dry air can irritate the respiratory tract, and appropriate humidity can reduce coughing at night and dry and itchy throats.

　　3. Choose warm bedding

　　Change to a plush duvet cover and a thick mattress, and place a hand warmer beside the bed. However, avoid making the quilt too heavy to avoid compressing the body and affecting blood circulation, making it difficult to turn over.

　　4. Reduce light interference

　　Close blackout curtains and turn off indoor night lights. The short days in winter and the dark environment at night can promote melatonin secretion and improve sleep quality.

　　5. Keep the environment quiet

　　If there is noise outside your window, close the windows tightly and use sound-isolating earplugs. A quiet environment can avoid being awakened during sleep, reduce the duration of light sleep, and allow for more adequate rest.

　　Whether the windows should be closed when sleeping in winter depends on the temperature and your own conditions. Combined with a comfortable sleeping environment, you can have a peaceful sleep on a cold night and reserve energy for the next day.