Name: 點解我哋會瞓覺？
Uploaded: 2013-08-14T14:53:51Z
Duration: 21 min 32 s
Description: Russell Foster 係一位生理節律神經科學家，研究腦部嘅睡眠週期。佢提出疑問：我哋知道幾多睡眠嘅嘢？就算睡眠佔用我哋人生三分一時間，事實表明我哋知得唔多。呢個講座裏面，佢會講到三個睡眠成因嘅熱門理論，並解開年齡同睡眠時間之間關係嘅謎底，仲會講下幾種用睡眠預測心理健康嘅新方法。

Here I say that the quote, "O sleep, O gentle sleep, nature's soft nurse, how have I frighted thee?" is from "the Scottish play," a euphemism for *Macbeth*. But in fact it's from *Henry IV, Part 2*.

Russell Foster 係一位生理節律神經科學家，研究腦部嘅睡眠週期。佢提出疑問：我哋知道幾多睡眠嘅嘢？就算睡眠佔用我哋人生三分一時間，事實表明我哋知得唔多。呢個講座裏面，佢會講到三個睡眠成因嘅熱門理論，並解開年齡同睡眠時間之間關係嘅謎底，仲會講下幾種用睡眠預測心理健康嘅新方法。

點解我哋會瞓覺？

Sleep is not a passive, wasted stretch of time but a powerful engine for restoring the body and sharpening the mind. On average, people spend 32 years asleep over a 90-year lifespan, yet modern life treats sleep as dispensable. Chronic sleep deprivation damages memory, weakens judgment, and even raises the risk of obesity and heart disease. Powerful new research reveals deep links between disrupted sleep and mental illness, suggesting that sleep is critical not just for daily functioning, but for mental health itself.