In the fitness space there is no shortage of diet fads promising ripped physiques and explosive performance. The internet is littered with dietary dogmas such as the so-called “animal based” diet and many others. These fad diets typically have something to offer, but if one focuses on metabolic science, one principle stands out: controlling glycemic load (GL) has the power to unlock lean muscle growth, sustained energy, and metabolic health. For the hybrid athlete who trains for both strength and endurance, a low GL diet is the foundation for optimal athletic performance.