This Sunshine Product training focuses on the three major glands that regulate metabolism—the thyroid, pancreas and adrenal glands. It also provides some suggests for the pineal and pituitary glands. The reproductive system is covered separately. We discuss only two "terrains" for each gland—overactive and underactive—suggesting remedies to calm or build each of the glands. After the digestive, intestinal and hepatic systems, I find these glands are the next most common root weaknesses in people who are chronically ill. So learning how to recognize when there are problems here and knowing the tools to correct them is very important.