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Read the individual product entries for RAD-140 and SR-9009 for an in-depth dive on the mechanisms of action. RAD-140 is an excellent lean muscle builder that was formulated to synthetically mimic the anabolic effects of testosterone without the androgenic side effects. It maintains an anablic to androgenic ratio of 90:1. Modulating the expression of the ESR1 gene that regulates estrogen binding, while reducing sex hormone binding globulin, combines to create a drier and leaner look. The SR-9009 blocks fat gain and helps the user positively partition carbohydrate intake to glycogen stores, rather than being stored as fat. This enables the user to slowly increase calories and work capacity to build more lean muscle mass and the metabolism.

Lean bulk stack

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