In an ideal world, you would be able to lose only fat mass while preserving lean muscle mass — however, from a biological perspective this is impossible. (masteringdiabetes.org)
Recent studies have shown that whey protein can help you increase size and strength and get rid of fat while preserving lean muscle mass. (fitnessandpower.com)
Large and giant breeds like the Great Dane require a protein - rich diet to help preserve their lean muscle mass with moderate fat content to provide a concentrated source of energy. (pawster.com)