L Carnitine vs Pre Workout: Which Supplement Should You Take? L Carnitine doesnt magically burn fat, it helps your body use fat as energy. Combine it with training and consistency, and youll feel the difference @Marybosch shows us how L Carnitine will boost How L Carnitine Helps with Fat Metabolism L Carnitine Is it Worth Taking? Ideal Nutrition Still confused about L Carnitine? In this reel, he explains how Muscle Food L Carnitine works inside your body. A naturally occurring amino acid that helps convert stored fat into usable energy.