These compounds , AIC Ar, GW-501516, and RAD 150, frequently mentioned in the fitness community, warrant a thorough comprehension . AICAR acts as an AMPK activator , enhancing glucose absorption and fatty acid oxidation. GW-501516, often called Cardarine, is a PPARδ agonist believed to promote endurance and fat loss . RAD 150, or S4, is an SARM in