Changes

Food and sleep are the determinants of obesity and emaciation. [Cha. Sa. [[Sutra Sthana]] 21/51] Night vigil causes dryness in body, while day sleep causes unctuousness. This leads to the aggravation of [[vata]] [[dosha]] and [[kapha]] [[dosha]] respectively. Sleeping in a sitting posture does not influence [[dosha]] equilibrium. It causes neither too dryness nor unctuousness. [Cha. Sa. [[Sutra Sthana]] 21/50]  

Food and sleep are the determinants of obesity and emaciation. [Cha. Sa. [[Sutra Sthana]] 21/51] Night vigil causes dryness in body, while day sleep causes unctuousness. This leads to the aggravation of [[vata]] [[dosha]] and [[kapha]] [[dosha]] respectively. Sleeping in a sitting posture does not influence [[dosha]] equilibrium. It causes neither too dryness nor unctuousness. [Cha. Sa. [[Sutra Sthana]] 21/50]  

This article deals with the physiology of sleep, its classification, and its importance in healthy and diseased conditions described in Ayurveda texts.  

This article deals with the physiology of sleep, its classification, and its importance in healthy and diseased conditions described in Ayurveda texts.  

</div>

</div>

==Etymology and derivation==

==Etymology and derivation==

<div style="text-align:justify;">

<div style="text-align:justify;">