The ongoing debate over slow reps vs fast reps has been addressed by Max Posternak, founder of Gravity Transformation. Posternak explains that slow reps provide benefits such as increased time under tension, while fast reps can help build muscle fibers. He suggests combining both methods for optimal results. When it comes to weight loss, the choice between slow reps and fast reps does not significantly impact calorie burn. Posternak also notes that switching up your rep speed can help overcome fitness plateaus. For more information, watch the video provided.