German Pharma - Muscle Memory Stack - 1 Month Supply The Muscle Memory Stack has been put together to grow and develop your muscles and brain. This stack combines a cognitive enhancer, myostatin inhibitor, and muscle energiser to unleash a host of highly desirable benefits, including; Firstly, the Muscle Memory Stack contains Epicatechin, which is a myostatin inhibitor. Myostatin is the protein responsible for limiting muscle growth. Therefore Epicatechin helps relieve the cap on muscle growth potential, enabling you to gain noticeable muscle in a shorter amount of time. Alpha GPC (alpha-glycerylphosphorylcholine) is a cholinergic compound used to enhance cognition, mental focus and improve power & strength. Alpha-GPC is a cholinergic compound that is predominantly used for its cognitive enhancing properties and its ability to increase physical power output. Alpha-GPC supplementation has been shown in a clinical setting to reduce the rate of cognitive decline in male and females. The final product in this stack is creatine, which is the most well-studied and respected supplement when it comes to supporting muscle development and athletic performance.