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The northern wind is moist, soft, pleasant, cold, and slightly astringent and it does not vitiate the [[dosha]]s. Therefore it increases the strength and water content of those who are normal. It should especially be welcome for those who are afflicted by emaciation, tuberculosis and poisons. [Su.Sa. Sutra Sthana 20/23-30]<ref name=Susruta/>
The northern wind is moist, soft, pleasant, cold, and slightly astringent and it does not vitiate the [[dosha]]s. Therefore it increases the strength and water content of those who are normal. It should especially be welcome for those who are afflicted by emaciation, tuberculosis and poisons. [Su.Sa. Sutra Sthana 20/23-30]<ref name=Susruta/>
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===Application of knowledge of directions in anatomy (sharira rachana) and physiology (sharira kriya)
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===Application of knowledge of directions in anatomy (sharira rachana) and physiology (sharira kriya)===
Directions are used to know the position of different structural entities like abdominal organs (koshtanga), channels of transportation and transformation ([[srotas]]), organ cavities (ashaya), vital structures ([[marma]]) etc.
Directions are used to know the position of different structural entities like abdominal organs (koshtanga), channels of transportation and transformation ([[srotas]]), organ cavities (ashaya), vital structures ([[marma]]) etc.