People who have a greater sense of purpose usually have better physical and mental health, which in turn explains their higher-quality sleep.

目标感更强的人通常身心更加健康，这反过来解释了他们睡眠质量更高的原因。

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Studies of people with dementia and anxiety have found that gardening helps calm their agitation, leading to better sleep patterns and improved quality of their rest.

研究患有痴呆和焦虑症的人也已经发现园艺工作可以帮助他们平息躁动，养成更好的睡眠方式和提高睡眠质量。

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In a recent study, latex pillows were better than polyester and feather for comfort and sleep quality, and testers had fewer complaints of neck pain.

在一项最近的研究中，乳胶枕比涤纶枕和羽毛枕要舒服得多，睡眠质量也更高，测试者对颈部疼痛抱怨的也更少。

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The younger patients getting loads of good quality sleep performed better on tests than their older colleagues who had worse quality sleep.

BBC: Boosting sleep 'may slow memory rot'