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== निद्राभेदाः॥ Types of Nidra ==

== निद्राभेदाः॥ Types of Nidra ==

Ayurveda literature described various types of sleep. These types are nothing but various causes that induce sleep in an individual. These are as below

Ayurveda literature described various types of sleep. There exist various causes related to body, mind and also the outer environment which may affect the process of sleep. The cause, effect and type of sleep decide its positive or negative effects on body and mind. Therefore, based on such factors, sleep has been categorized into various types. These are as below

=== तमोभवा॥ Tamobhava ===

=== तमोभवा॥ Tamobhava ===

Abundance of Tamas guna leads to induction of sleep. Therefore, tamas excess could be the only causative factor for sleep in some individuals at some time and then such kind of sleep is identified as Tamobhava.

Abundance of [[Tamas (तमः)|Tamas]] guna leads to induction of sleep. Therefore, tamas excess could be the only causative factor for sleep in some individuals at some time and then such kind of sleep is identified as Tamobhava.

=== श्लेष्मसमुद्भवा॥ Shleshmasamudbhava ===

=== श्लेष्मसमुद्भवा॥ Shleshmasamudbhava ===

Dominance of kapha dosha in body induces sleep. Thus, excess kapha causes sleep it is called as shleshmasamudbhava.  

Dominance of kapha dosha in body induces sleep. Thus, when excess kapha causes sleep it is called as shleshmasamudbhava.  

=== व्याध्यनुवर्ती॥ Vyadhyanuvarti: ===

=== व्याध्यनुवर्ती॥ Vyadhyanuvarti: ===

In some rogas, excess sleep is manifested as a symptom. In such cases the sleep is believed to be disease related.

In some [[Roga (रोगः)|rogas]], excess sleep is manifested as a symptom. In such cases the sleep is believed to be disease related.

=== आगंतुकी॥ Agantuki: ===

=== आगंतुकी॥ Agantuki: ===

Sleep is also observed as an [[Arishta lakshanas (अरिष्ट लक्षणानि)|Arishta lakshana]] (अरिष्टलक्षणः) in certain cases. Such sleep along with some other symptoms indicates towards end of life.  

Sleep is also observed as an [[Arishta lakshanas (अरिष्ट लक्षणानि)|Arishta lakshana]] (अरिष्टलक्षणः) in certain cases. Such sleep along with some other symptoms is indicative of that person's journey approaching towards end of life.  

=== मनःशरीरश्रमसंभवा॥ Manashareershramasambhava: ===

=== मनःशरीरश्रमसंभवा॥ Manashareershramasambhava: ===

Exhaustion of mind (Manas) due to its activities like overthinking or exhaustion of body from strenuous activities ultimately makes body, mind and senses incapable to perform further activities and the exhausted individual sleeps. Such kind of sleep resulting from exhaustion is included under this category.  

Exhaustion of mind (Manas) due to its activities like overthinking and exhaustion of body from strenuous activities makes body, mind and senses incapable of performing  further activities and then the exhausted individual sleeps. Such kind of sleep resulting from exhaustion is included under this category.  

=== रात्रिस्वभावप्रभवा॥ Ratrisvabhavprabhava ===

=== रात्रिस्वभावप्रभवा॥ Ratrisvabhavprabhava ===

Tamas guna dominance due to darkness is believed to be the natural status of night (Ratri). And due to dominance of tamas sleep is induced. This is the course of natural cycle of sleep. Thus sleep that is induced due to day and night cycle, at night, is included in this category. This type of sleep is called as Bhootadhatri (भूतधात्री) i.e. the one that sustains living beings or their life.   

Tamas guna dominance due to darkness is believed to be the natural property of night (Ratri). And due to dominance of tamas sleep is induced. This is the course of natural cycle of sleep. Thus sleep that is induced due to day and night cycle, at night, is included in this category. This type of sleep is called as Bhootadhatri (भूतधात्री) i.e. the one that sustains living beings or their life.   

== रात्रौ जागरणम्॥ Ratrau Jagaranam ==

== रात्रौ जागरणम्॥ Ratrau Jagaranam ==