November through February is Vata season in the Northern Hemisphere.  Vata season is when the weather is cold and dry.  This weather causes an accumulation of Vata, which can lead to imbalance.  To keep Vata in check, there are a lot of things that we can do. -Eat warm, cooked foods.  For example, choose soup instead of salad. -Stay warm.  Wear warm socks, gloves, and a hat outdoors. -Sip a warm beverage, like herb tea, throughout the day. -Avoid caffeine. -Give yourself a warm, sesame oil massage (abhyanga) before your shower in the morning.

Vata tea on Chopra Center site