Why sleep is most important but most neglected part of daily life

I usually thought my sleeping pattern is worse. And I thought to write about it. So , I searched that why sleep is important anyway? 

Sleep is usually the first thing we negotiate with.

We delay it, reduce it, and treat it as flexible. Work can stretch, screens can wait, conversations can continue, but sleep is expected to adjust. Somewhere along the way, we started behaving as if sleep is optional, something to be managed rather than respected.

This attitude is not new, but it is deeply modern. What is interesting is that ancient traditions never saw sleep this way. Ayurveda, one of the oldest systems of understanding the body, places Nidra (sleep) alongside food and balanced living as one of the three pillars of life. The Charaka Samhita states clearly:

“Nidra samyak yogat sukham, pushti, bala, dyana, jivitam.” which roughly translates to "Proper sleep brings happiness, nourishment, strength, clarity, and long life. " There is no ambiguity here. Sleep is not rest alone; it is restoration.

Even spiritual philosophy did not treat sleep casually. In the Bhagavad Gita, Krishna speaks about balance, not extremes. He warns that neither too much sleep nor too little allows a person to remain steady in mind. The message is simple: sleep is not indulgence, and deprivation is not discipline. Balance is strength.

Modern science, interestingly, has arrived at the same conclusion through a very different path. Matthew Walker, in Why We Sleep, describes sleep as the most powerful biological reset we possess. According to him, sleep repairs the body during deep stages and repairs the mind during dreaming stages. Without enough sleep, both systems quietly degrade.

Here are some insights from his book which I listened recently in audiobook form. One of the biggest misunderstandings about sleep is that it is a single state. It is not. Sleep has layers, and each layer serves a purpose. Deep sleep restores muscles, immune function, and physical energy. REM sleep regulates emotions, stabilizes memory, and integrates learning. When sleep is shortened, we do not lose rest evenly. We lose specific benefits that cannot be recovered later.

This explains why people can work harder and still feel mentally dull. Learning does not complete itself while studying. It completes itself while sleeping. During the night, the brain decides what matters. It strengthens some connections and lets others fade. Without proper sleep, information remains shallow. Understanding does not settle.

Shakespeare captured this centuries ago, long before neuroscience existed. In Macbeth, he called sleep “that knits up the ravelled sleeve of care.” It is a poetic way of saying what science now confirms: sleep repairs emotional damage. When sleep is disturbed, emotions lose regulation. Irritation rises. Anxiety intensifies. Small problems feel heavier than they should.

Anyone who has experienced prolonged sleep deprivation knows this truth personally. You become reactive instead of reflective. The mind responds faster, but with less wisdom. This is not a moral failure. It is biology. 

Over time, this imbalance moves from the mind to the body. Walker’s research links chronic sleep loss with heart disease, diabetes, weakened immunity, and neurodegenerative disorders. These conditions do not appear suddenly. They grow silently, just as sleep loss accumulates silently.

One of the most dangerous aspects of poor sleep is that we are bad at detecting it. The brain adapts subjectively. You feel functional, even when performance declines. Reaction time slows. Judgment weakens. Attention fragments. This false sense of normality is why sleep deprivation is so common and so underestimated.

Indian traditions understood rhythm long before the term circadian cycle existed. Waking with the sun and resting early were not moral rules but biological alignment. In Maharashtra, older generations lived closer to this rhythm, not because life was easier, but because it was simpler. Darkness meant rest. Light meant activity.

Modern lighting and screens have disrupted this deeply. Late nights delay melatonin release. Sleep quality deteriorates. Mornings lose clarity. Technology does not just consume time; it changes physiology.

While writing on this article, suddenly I remembered,"the Russian sleep experiment." It was conducted to know how sleep is important and how can we manipulate sleep. But the experiment was brutal; results were terrible. A totally inhuman experiment done on humans. Well, I can't say if it's story is true or exaggerated. But needless to say, sleep is important for vitality. The experiment proved there is no substitute for sleep. No supplement replaces it. No productivity system overrides it. 

The deeper message across Ayurveda, philosophy, religion, and modern neuroscience is the same. Sleep is not what we do when life ends for the day.

Sleep is what allows life to return with clarity the next morning 🌅

🌙 Reference & Further Reading

Scientific sources and book recommendation to deepen your understanding of sleep

Harvard Study – Sleep & Memory Function

Explains how sleep directly improves memory consolidation and learning ability.

NIH Research – Sleep & Cognitive Health

Scientific review showing how sleep affects brain performance, emotion, and long-term health.

📘 Buy “Why We Sleep” by Matthew Walker on Amazon