What is Your Metabolism?Your metabolism has many components and functions. We are interested in the weight loss (fat burning) function. Your thyroid gland (in your neck), your adrenal glands (kidneys), your liver, your digestive system, your blood sugar levels and your hormone balance are some of the key components of your weight loss. The health and functioning of these components has enormous control over how successful your weight loss will be and how much you will get from your dieting and exercise. This is the very foundation of good weight loss.