In regards to tipping the scales, there is one seriously underrated hormone: insulin. Insulin can be the decider to which 10 kgs of fat or 10 kgs of solid muscle lie.
Insulin is the most anabolic hormone in the body meaning that it is responsible for your body's uptake of glucose and amino acids, which in turn, forms glycogen and skeletal muscle tissue.
Glycolog acts as a partitioning agent, meaning that it can upregulate the enzymes that control how much glycogen and amino acids your body adds to existing muscle tissue.