MK-677, also known as Ibutamoren, was developed in the 1990s as a growth hormone secretagogue, aiming to stimulate the release of growth hormone and insulin-like growth factor 1 (IGF-1). Clinical Trials (2000s):  In the 2000s, MK-677 underwent various clinical trials for conditions like growth hormone deficiency and muscle wasting, showcasing its potential to increase lean body mass and bone density. Anabolic Effects (Muscle Growth): Studies suggested that MK-677 has an anabolic effect, contributing to muscle growth by enhancing protein synthesis and increasing nitrogen retention, making it appealing to athletes and bodybuilders. Metabolism and Fat Loss: Some research indicated that MK-677 could boost metabolism and facilitate fat loss, leading to its exploration as a potential treatment for obesity and related metabolic disorders. Improved Sleep Quality: Users reported improved sleep quality as a notable benefit, potentially linked to the hormone-regulating effects of MK-677, making it of interest not only for fitness enthusiasts but also for those seeking better sleep patterns.