"In Ayurveda the fall season corresponds to two major doshas or mind-body principles: Pitta and Vata. Autumn is considered Pitta as long as hot weather prevails, and Vata as it becomes cold. Late fall and winter are known as “Vata season” because they are marked by some of the same qualities that characterize Vata: cold, dry, light, clear, and moving.
As long as these qualities are in balance, a person whose dosha is predominantly Vata will be healthy, creative, and exuberant. But when too much Vata accumulates in the body and mind, the imbalance may manifest as physical or emotional disorders, including insomnia, dry skin, arthritis, constipation, high blood pressure, anxiety, and depression.
All body types are vulnerable to Vata derangement during autumn and winter, but those who are predominantly Vata types need to be particularly vigilant about staying in balance."
by Deepak Chopra