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Ritu, the season, classified by different features expresses different effects on the body as well as the environment. Ayurveda has depicted various rules and regimens (Charya), regarding diet and behaviour to acclimatize seasonal enforcement easily without altering body homeostasis. The prime principle of Ayurvedic system of medicine is preventive aspect, can be achieved by the change in diet and practices in response to change in climatic condition. This is a very important aspect of preventive medicine as mentioned in Ayurvedic texts. The basic principle followed in the Ayurvedic system of medicine is Swasthyashya Swasthya Rakshanam, which means to maintain the health of the healthy, rather than Aturashya Vikara Prashamanancha, means to cure the diseases of the diseased. For this purpose the Dinacharya (daily regimen) and Ritucharya (seasonal regimen) have been mentioned in the classics of Ayurveda.
Munde et al. (2024) studied this question.