L carnitina para mejor rendimiento y para quemar la grasa Blog CARNITINE 3000 de Hero Tech Nutrition Carnitine Vegan Diets Sources Supplements & Deficiency Beef Benefits (Why is Beef Healthy?) Data Driven Science L carnitine: Science Backed Benefits, Risks, and More Steak isn't bleeding. That red liquid you see is mostly water mixed with myoglobin, a protein found in muscle that stores oxygen. When steak cooks, the muscle fibers tighten and release moisture.