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YK-11 is selective androgen receptor modulator that increases muscle mass. In fact, it has more powerful anabolic effects than usual steroids. YK11 binds with androgen receptor thus causing several androgen effects such as blocking the formation of myostatin in the body and allowing follistatin to drastically increase a muscle mass. Both proteins are naturally occurring compounds in the human body which have opposite functions in the body. Its effect is considered more potent than its analogs as it helps to build up lean muscle mass quickly and efficiently. The advantage of YK-11 over anabolic steroids that it doesn’t affect testosterone level in the body but stimulates the releasing of proper hormones, and unlike steroids, it has a positive impact on mental health as it helps to cope with stress and anger. This, on its hand, makes YK-11 safer for an extended period cycle without risk of having side effects. It increases physical stamina by making muscles harder and prepares the body for new challenges. You can buy YK-11 online on our website and we guarantee fast shipping to USA or UK and cheap prices.