為什麼午睡可以增強您的心理敏捷性?
  • Experts say short naps can eliminate cluttered thoughts from the brain.
  • Researchers say people over 60 who take a nap perform better on cognitive tests than those who don't take a nap.
  • Experts say napping can benefit people of any age by allowing the brain to rest and clear our daily thoughts.
  • An expert said that the best time to take a nap is between 1 pm and 3 pm, with an interval of 10 to 30 minutes.
  • Another expert warns that long naps may be a sign that a person is not getting enough sleep at night. Naps suck.
  • Some people believe that taking a nap is a sign of laziness, low energy or even illness.

But a new study suggests that if you're over 60, an afternoon nap may make your mind sharper. Researchers say older adults who nap in the afternoon score higher on cognitive tests than those who don't nap. The study, published in the journal General Psychiatry, looked at the physical and cognitive health of 2,214 people over the age of 60 living in large cities in China. Among them, 1,534 cases took naps regularly, while 680 cases did not take naps.

Observational study found that nappers scored significantly higher on the Mini-Mental State Examination (MMSE), a standard dementia screening test that measures visuospatial skills, attention span, problem-solving, Assessment of working memory, positional awareness, and oral fluency. Children who nap do particularly well in the latter three categories, according to research led by Dr. Sun Lin of the Shanghai Mental Health Center and Shanghai Jiao Tong University's Alzheimer's and Related Diseases Center. Sleep has a lot to do with your ability to learn, Napping can help your brain recover from burnout or information overload. When you take a nap, your brain clears unnecessary information from its temporary storage areas in preparation for absorbing new information.

The benefits go beyond mental acuity

The study group (both nappers and non-nappers) averaged 6.5 hours of sleep per night. A nap is defined as at least 5 consecutive minutes of sleep anytime after lunch, but not more than 2 hours. Nappers were asked how often they took naps in a typical week. Responses ranged from once a week to once a day. One weakness of the study is that the researchers did not ask participants how long or what time of day they took their naps.

Ideally, a healthy nap should be taken between 1 p.m. and 1 p.m. and last from 10 to 30 minutes. If you can get some light sleep in the afternoon, there will be some huge benefits. There is evidence that napping is helpful for improving mood, energy, and productivity while reducing anxiety and physical and mental stress. A short nap can help you feel alert and ready to tackle the rest of the day without the feeling of "sleep inertia" where you feel confused, disoriented, and restless when you wake up. If you can nap for a longer period of time (such as 60 minutes), there's evidence that napping for that length of time can actually help you study. During longer naps, your brain will begin to transfer memories from your temporary holding device (the hippocampus) to their permanent home in the cortex.

Not all naps are healthy

A survey conducted in 2009 showed that more than one-third of Americans take a nap every day. While other research suggests napping improves mental agility, it's less clear that napping protects against the cognitive decline that occurs with age. Anyone can benefit from a short mid-afternoon nap, especially when natural circadian rhythms are in place. Short naps (less than 30 minutes or so) have been shown to increase alertness, improve cognitive performance, and improve mood for the rest of the day. However, longer naps can be problematic, with two hours indicating that more pathology may be hiding and leading to the need for increased naps. If you frequently nap for longer than 1 hour, it may be a sign that you are not getting enough nightly sleep quantity and/or quality. Many sleep disorders may mask the quality or quality of your sleep. Poor sleep habits may also be playing a role. This is often noticed with screens and bright lights and long work hours.

In older adults, medical conditions and/or the medications used to treat them can also affect sleep quality and quantity. Certain blood pressure medications, arthritis medications, muscle relaxants, and certain mental health medications may negatively affect sleep quality. More research is needed to determine whether older adults need more sleep, including more naps, suggesting the body is trying to compensate for increased inflammation associated with cognitive decline and dementia. Are neurodegenerative changes causing sleep/wake disturbances (such as dementia), or the other way around? .

Review

All comments are moderated before being published

HealthyPIG Magazine

View all
哪些職業對健康影響最大?科學與現實的分析

哪些職業對健康影響最大?科學與現實的分析

在現代社會中,工作佔據了人們生命中相當大的一部分。然而,不同職業對健康的風險並不相同。一些工作性質或環境,會顯著增加慢性病、心理壓力、甚至縮短壽命的風險。以下從科學研究與醫學角度,探討幾類對健康損害較大的職業,並附上相關統計數據。

電擊槍的機制與對人體健康影響

電擊槍的機制與對人體健康影響

在現代執法中,警察常使用所謂「非致命性武器」(less-lethal weapons),其中最廣為人知的便是 電擊槍(Taser)。電擊槍的設計初衷是提供一種介於徒手制服與槍械之間的選擇,藉由暫時性電擊使嫌疑人失去行動能力,以降低致命暴力發生的風險。然而,電擊槍並非完全無害,背後涉及的電流機制與人體生理反應值得深入探討。

PD-(L)1/VEGF「三抗」:腫瘤免疫治療新方向

PD-(L)1/VEGF「三抗」:腫瘤免疫治療新方向

腫瘤治療的新挑戰 近十年來,免疫檢查點抑制劑(Immune Checkpoint Inhibitors, ICIs)改變咗癌症治療格局。當中 PD-1/PD-L1 抑制劑 已經成為多種腫瘤的一線或二線療法,而 VEGF 抑制劑 亦係抗血管生成治療嘅核心藥物。然而,臨床數據顯示,雖然 PD-(L...
疲勞駕駛的健康風險與新科技防護:REMONY 裝置的認證分析

疲勞駕駛的健康風險與新科技防護:REMONY 裝置的認證分析

疲勞駕駛一直是全球道路安全的重要議題。許多人將疲勞視為「只是累了」,但科學研究表明,當人處於極度疲倦時,大腦功能下降的程度可與酒精中毒相當。不僅如此,長時間駕駛還會對身體健康造成慢性負擔。隨著科技發展,越來越多可穿戴裝置被設計用來協助監測疲勞狀態,其中,日本 Medirom 公司開發的 REMONY 裝置近日獲得國土交通省(MLIT)認證,成為市場矚目的焦點。本文將先探討疲勞駕駛的健康風險,然後客觀分析 REMONY 裝置的技術特點與潛力。

腳跟為何會變黃乾裂?成因與護理全攻略

腳跟為何會變黃乾裂?成因與護理全攻略

腳跟皮膚為何容易出現問題? 腳跟係身體承受最大壓力嘅部位之一。每日行走、站立,腳跟長期摩擦同受壓,如果缺乏適當護理,就會導致角質層過度增厚、乾燥同龜裂。當角質層愈厚,皮膚顏色會慢慢變得偏黃,甚至暗啡。 造成腳跟黃、裂、脫皮的常見原因 角質層增厚長期行走或穿硬底鞋,令腳跟角質層積聚過多,顏色...
Wi-Fi 會唔會對人體有害?科學研究同日常生活影響全解析

Wi-Fi 會唔會對人體有害?科學研究同日常生活影響全解析

Wi-Fi 幾乎已經變成日常生活不可或缺嘅一部分。無論係屋企、公司、學校,甚至咖啡店同巴士,都有無線網絡覆蓋。但好多讀者都會擔心:「成日浸喺 Wi-Fi 入面,會唔會慢慢影響身體健康?會唔會致癌?會唔會令我失眠或者精神差?」 今篇文章會由淺入深,帶大家了解 Wi-Fi 嘅電磁波特性、科學研究結...
長時間保持一個姿勢,點解會痛、僵硬、麻痺?|久坐對身體嘅危害

長時間保持一個姿勢,點解會痛、僵硬、麻痺?|久坐對身體嘅危害

好多人每日要長時間坐喺辦公室、電腦前面,或者瞓覺時維持同一個姿勢。結果往往出現腰酸背痛、手腳麻痺,甚至覺得關節「鎖住」郁唔到。久坐傷身腳麻痺點解長時間坐姿影響健康,都係大家經常搜尋嘅問題。今次我哋就一齊睇下背後原因。

癌症如何擴散:從一個器官走到另一個器官的旅程

癌症如何擴散:從一個器官走到另一個器官的旅程

癌症最令人畏懼的地方,不單在於原發腫瘤本身,而是它能夠 轉移(Metastasis) —— 由原本的器官擴散至身體其他部位。事實上,大多數癌症致命的原因,並非來自腫瘤的「原居地」,而是因為它在其他重要器官(如腦、肝、骨、肺)形成了新的腫瘤。

腦癌種類全面介紹|常見類型與特徵

腦癌種類全面介紹|常見類型與特徵

腦癌(Brain Cancer)泛指源自腦部或蔓延至腦部的惡性腫瘤。臨床上可分為兩大類: 原發性腦腫瘤(Primary Brain Tumors):由腦部細胞本身變異而成。 繼發性腦腫瘤(Secondary / Metastatic Brain Tumors):由其他器官的癌細胞(如肺...