Reader's Digest Chinese Edition 讀者文摘中文版 (Digital)

Reader's Digest Chinese Edition 讀者文摘中文版 (Digital)

1 Issue, December / January 2025

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小睡睡多久最好?

小睡不只讓人神清氣爽,而且有益身心。在《心臟》(Heart)期刊發表的一項研究發現,健康的小睡與降低心臟病風險之間有關。美國心理學會(American Psychological Association)指出,小睡可以改善記憶力、學習能力、免疫系統功能和心情。 加州大學爾灣分校(University of California, Irvine)的認知神經科學家,也是《休息的力量》(The Power of the Downstate)一書作者莎拉.梅德尼克(Sara Mednick) 解釋,人在睡著後身體會經歷幾個階段,每個階段皆對健康有影響。 第一階段:「入睡」期。 第二階段:肌肉、心率、大腦活動減慢。 第三階段:恢復性的深層睡眠。 第四階段:快速動眼期睡眠(R EM),此時大腦活動增加, 做夢的可能性最大。 理想的小睡時間與這四個階段的週期有關。 20分鐘的小睡 按梅德尼克的說法,20到30分鐘是最恰當的小睡時間。她說,充足的第二階段睡眠,可讓身心進入完全放鬆的狀態,有助於記憶。 60分鐘的小睡 第三階段睡眠是讓身體修復組織、增強免疫系統、補充精力的時間。但是在這個階段當中醒來,會讓人感到昏昏沉沉,梅德尼克說。大部分的人在睡到60分鐘左右後,開始離開第三階段,所以此時不失為設定鬧鐘響的適當時間。 90分鐘的小睡 一個完整的睡眠週期約為一個半小時,若小睡至一個完整的睡眠週期, 可能大有好處。不過根據《美國老年醫學會期刊》(Journal of the American Geriatrics Society)上的一項研究指出,小睡時間超過90分鐘可能會影響夜間睡眠,甚至損害記憶力。 不習慣小睡?沒關係。梅德尼克說:「每個人都需要休息,但並非人人需要小睡。」…
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Reader's Digest Chinese Edition 讀者文摘中文版 (Digital) - 1 Issue, December / January 2025

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