Summarize the following:
Because your body reacts to cold by sending warm blood to your internal organs, you can help prevent your hands from getting cold and help warm them up by keeping your core warm and protected. If your body doesn’t think your organs are in danger, it won’t take warming blood away from your hands. In cooler weather, layer your clothing, wear a base layer, an insulating layer, and an outer layer that protects from wind and rain. Tight clothes, socks, and even underwear can actually constrict your blood vessels, meaning blood has a harder time circulating, and this can leave your hands chilly. To combat this, wear loose clothes that are comfortable and provide you with freedom of movement. If you are wearing tight clothes and your hands get cold, change into looser clothes as soon as you can. It makes sense that if your hands are exposed to the cold, then they will get cold, so keep them protected with warm, loose-fitting gloves.  Be sure to get gloves that cover your wrists as well, because a lot of heat can be lost here. Put your hands in your pockets if you don’t have gloves, or stick them inside your jacket to keep them out of the breeze. Ginger is a thermogenic food, meaning it produces heat when your body metabolizes it. A hot cup of ginger tea could help warm your entire body, including your hands, and holding the warm cup is sure to bring some life back to your hands. No matter how cold it is outside, there are some areas of our bodies that are almost always warm, such as under our armpits and between and under our thighs. Put your bare hands directly on the skin in a warm area of your body and leave them there until they warm up.

Summary:
Keep your body warm. Wear loose clothing. Wear warm gloves. Eat ginger. Use your own body heat.