Humidity is also an important factor for restful sleep. Central heating can dry the air in living spaces and make breathing become difficult or uncomfortable. If you wake up with a sore throat or dryness in your nose, the room probably has too little humidity. You may be unable to sleep with the window open, because of pollution or noise, but humidifiers, which release moisture into the air, can prevent the room from seeming dry and stuffy.
The kind of bedding you have may also affect sleep. Being a more constant temperature throughout the night allows our bodies to have a more relaxing and rejuvenating sleep.
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