3 improve sleep quality includes three aspects.

3提高睡眠质量包括三方面。

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To improve sleep quality and physical focus, let the body completely relaxed.

改善睡眠质量，提高身体的专注度，使身体完全轻松。

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Setting bedtimes can improve sleep quality and quantity for infants and toddlers, according to a growing body of research.

根据一项身体成长的研究表明，设置睡眠时间有助于提高婴幼儿睡眠的质与量。

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"It really can improve not only the quality of people's sleep but also reduce their chances of having mites and infestations of bedbugs, " she said.

CNN: Meet the critters inside your mattress