Sweet. Then he should be jacked and shredded by the end of this.
Why do we eat protein then?
Preserving, and building, are two different things.
The body is an efficiency (preservation / sparing), biochemical wonder. It’s ability to sustain under various loads and time periods is remarkable. The research of fasting has demonstrated various muscle sparing processes that take place while consuming nothing at all (for various periods of time).
Did gunslinger say he’s not consuming any protein??
Why do we eat protein?
I / We consume protein because it’s an essential nutrient / building block.
Protein and Fat are essential — exogenous carbs are not.
The ratio of macros we consume, combined with type of activity (and other factors such as micronutrients, electrolytes, hydration, peds, etc etc…) will determine body composition.
That aside, as I posted previous, lean body mass is protected / preserved as a last resort. Glucose > liver THEN muscle stored glycogen > then fat is utilized before > muscle tissue begins to be catabolized.