Please don't use the "I still have muscle and definition" argument against not losing muscle. I have no doubt that you can still be muscular and sexy(
) while running in the morning before eating, that's not what im saying. What I AM saying, is that not eating before running in the morning will hamper your muscle-growing, and will contribute towards losing muscle. No, you won't lose all your muscle, and yes, you will lose a lot of fat. However, if you are on a cut and aiming to keep as MUCH of your muscle as possible, you should be eating something before running in the morning.