Answer: Garments that protect extremities
During cold weather, the most important thing for a person to look for is an exercising clothing that can protect the extremities so that you will not experience hypothermia, frostbite and generalized vasoconstriction, which are dangerous to your health.
Therefore, choosing the right garment will allow your body to give off heat during exercise in cold weather and maintain body heat during rest. Moreover, wool is a good fabric that could retain body heat.