In theory this makes perfect sense. No glycogen available, so straight to the fat stores for energy. When combined with hypertrophy based training, and performed on off days of said training, one would essentially achieve the illustrious goal of every man in the gym: burn fat while gaining muscle.
But something doesn’t seem quite right to me. How can you do the fasted cardio, and still spare you muscle stores from being used as fuel. It is due to this reason that I drink chocolate milk before and after cardio to try and preserve my muscle mass with some, but not too much carbohydrate, from which I can get some quick glucose for my workouts.
Is there some supplement or something people take when they do fasted cardio to prevent them from going catabolic, in regards to muscle?