In Chinese medicine, the Kidneys are considered the foundation of health. Many of the herbs in this formula work to strengthen the vital essence of the Kidneys. It nourishes, warms, and invigorates the blood, nourishes the Liver and Kidneys, and brightens the eyes, and has the ability to darken the hair. In China, a version of this warm formula is often used to help increase energy, vitality, and strength. Make a Bone Broth the way you usually would and add these herbs for the last hour of cooking, or more!