Feng is wind.
It is common this time of year and it can make you sick. Think of the pores of your skin like a door to the inside of yourself. The wind blows the door open. Then the wind blows around inside, and sometimes bring cold with it!
A simple and very important way to protect yourself from the wind is to wear a scarf. It doesn’t need to be a wooly winter one, light and wide will do.
Wrap the scarf to cover the base of your skull (at the occipital ridge) to the bottom of your neck (below the seventh cervical vertebrae.) Now you are protecting the wind gates- parts of your neck most susceptible to letting the wind in.