Why is the monsoon (Karkidaka) considered ideal for Ayurvedic treatment?

The classical seasonal regimen (ritucharya) teaches that diet and conduct should suit each of the six seasons [Ashtanga Hridayam, Sutrasthana 3]. During Varsha (the monsoon) Vata is naturally aggravated and the digestive fire (agni) is weak, so light, warm, easily digestible food and Vata-pacifying therapies are advised. Because the cool, moist atmosphere opens the body's channels and the skin becomes receptive to medicated oils, this is the classical window for Panchakarma cleansing and Rasayana rejuvenation — the basis of Kerala's Karkidaka Chikitsa. Based on classical texts; consult a doctor for personal advice.