To avoid getting sick, keep your wrists, ankles, and especially the back of your neck from being exposed to the cold. When you’re outside, be sensitive to how you feel and make sure your extremities don’t get too cold—especially your fingers and toes.

When your Kidneys are working well, the proper amount of heat is generated in your body, and normal precautions like “bundling up” in the winter will prevent cold from entering and getting trapped in your body. When your Kidneys are out of balance, you’ll notice a persistent feeling of cold in your lower back and extremities. If this is the case, you need to strengthen them. Otherwise you’ll be more vulnerable to pathogens and illness.