उमेर अनुसार तपाईंलाई कति गहिरो निद्रा चाहिन्छ?
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उमेर अनुसार कति गहिरो निद्रा आवश्यक छ?

Deep sleep should make up about 13–23% of your total sleep. For most adults, that’s roughly 1–2 hours per night. […]