SARMS or selective androgen receptor modulators are well-known for giving the same muscle growth results as anabolic steroids but without the negative side effects that comes with the latter. Japanese scientists are doing an experiment on a new SARM known as YK11 which is said to be the strongest amongst all, even more potent than classic steroids such as DHT. YK11 is believed to be a SARM and produce the effect of myostatin at the same time.