HCG Shot keeps you from losing muscle while you diet. By elevating hormone levels in the body, including testosterone, the HCG hormone creates an anabolic state (muscle-building) which counteracts the catabolic state (muscle-breakdown). There are hormone receptors on muscle fibres that respond to the increased hormone levels in patients taking the HCG hormone. In short, HCG injections are used to stimulate the hypothalamus gland, allowing your body to release abnormal fats. The result will eliminate massive amounts of fat from your body.