How to get a good night’s sleep

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Baby smiling in bed with eyes closed and arms out.

Getting a good night’s sleep is essential to being healthy. Yet, many of us struggle to fall asleep. A new research has found that opening windows or doors before going to bed can reduce carbon dioxide levels in bedrooms, and improve sleep quality.

The participants’ subjective assessment of their sleep depth, which was obtained through questionnaires, correlated with carbon dioxide levels. Objectively measured sleep efficiency and the number of awakenings, which were assessed through senses worn during sleep, also correlated with carbon dioxide levels.

Lower carbon dioxide levels implied better sleep depth, sleep efficiency, and a lesser number of awakenings.