These compounds , AIC Ar, GW-501516, and RAD 150, frequently explored in the fitness community, warrant a deep review. AICAR acts as an AMPK stimulator , boosting glucose absorption and fatty acid oxidation. GW-501516, often referred to Cardarine, is a PPARδ stimulator believed to enhance endurance and lipids reduction . RAD 150, or S4, is an SARM