Anabolic Xtreme - Major Muscle builder... Anabolic Xtreme Retain increases T-3 production from the thyroid which causes an increase in metabolism and fat-loss. Anabolic Xtreme. This is the only post cycle product to ever keep your body in an anabolic state while cutting fat, to get you completely shredded. When combined with PCT and proper diet, most users report no post-cycle muscle loss and up to a 3% drop in body fat. Several hormones and hormone-like-substances trigger catabolism or muscle wasting. Glucagon does so by setting into motion a series of metabolic events that result in the release of fatty acids, amino acids, and glucose/glycogen from body tissues to restore blood circulatory glucose and energy substrate levels. However, the group we are most concerned with are called corticosteroids or glucocorticoids. This is a group of steroids that originate at the adrenal cortex of the adrenal glands (above your kidneys). Retain Phases are a way of creating a state of "protein sparing". When we altered the anabolic/catabolic ratio by decreasing protein wasting, we realize a net gain in lean tissue mass. Let me explain that. Some studies have stated that we gain and lose daily, equal amounts of protein based tissue at a rate of bodyweight x 1.818 expressed in grams. Obviously we have the ability to increase protein based tissue mass either by addition (Anabolism) or by accumulation (Protein sparing/anti-catabolic/saving). And for many, just decreasing the loss side of the equation a little bit results in superior post-cycle retention.