I'm going to be using the term "testosterone" interchangeably with the word "testosterone-releasing hormone". If you want to know more, I suggest you see the following links: The "male hormone" testosterone - A quick summary from my friend Richard W. Fass of the new review on testosterone. I'm going to have to warn you that it may seem a little too easy to swallow a whole lot of information. The first few pages of this review will be an explanation of what testosterone really is, why it is needed for a male to have sex drive, and how it does what it does in a man. Once you are done with that, it is time to read the second and third parts of this review. The first part is what does testosterone do to your body in terms of what the body needs to function as it should. I will explain it to you in easy terms. There are three types of body tissue - muscle, fat, and bone. Muscle tissue is comprised of all three. Fat tissue is composed of fat cells and is mainly found in the areas of the body that are most exposed to the sun. Bone tissue is a combination of skeletal muscle cells and tendons. Fat tissue does not require sunlight to burn off.