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==== Effects of sleep (verse 36-38 and 44-49) ====
 
==== Effects of sleep (verse 36-38 and 44-49) ====
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Recent conventional evidence suggests that seasonal variation can have an impact on sleep/wake cycle, which is quite interesting and proven the age-old concept of Ayurveda. Recent evidence shows that core temperature of body and secretion of melatonin hormone levels are slightly greater in the month of summer due to prolong the length of light exposure, which imparts significant role in daytime sleep in summer. This is the reason people go to bed early at night and wake up early in the morning in the month of summer.  Sunlight exposure in the morning hours may affect internal biological clock, shifting the timing of the sleep window. The need and function of sleep are the most lacking areas of sleep research in biomedical sciences. Some of the important ones are- restoration and recovery of body systems, energy conservation, memory consolidation, protection from predation, brain development, and discharge of emotions. [74,76,77,78]
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Recent conventional evidence suggests that seasonal variation can have an impact on sleep/wake cycle, which is quite interesting and proven the age-old concept of [https://en.wikipedia.org/wiki/Ayurveda Ayurveda]. Recent evidence shows that core temperature of body and secretion of melatonin hormone levels are slightly greater in the month of summer due to prolong the length of light exposure, which imparts significant role in daytime sleep in summer. This is the reason people go to bed early at night and wake up early in the morning in the month of summer.  Sunlight exposure in the morning hours may affect internal biological clock, shifting the timing of the sleep window. The need and function of sleep are the most lacking areas of sleep research in biomedical sciences. Some of the important ones are- restoration and recovery of body systems, energy conservation, memory consolidation, protection from predation, brain development, and discharge of emotions. [74,76,77,78]
    
==== Sleep about ''atisthula'' and ''atikrisha'' (verse 51) ====
 
==== Sleep about ''atisthula'' and ''atikrisha'' (verse 51) ====