I have about 20 pounds to go before I get a flat stomach, but I also want to build muscle and get in better shape. I used to be more muscular than I am now (and fatter), and my muscles have atrophied somewhat. I’m in a calorie deficit now to eliminate my pot belly, and I’m also eating lots of protein to feed my muscles after my workouts. I’ve heard that as long as I’m in a deficit, I won’t build muscle. But I can look in the mirror and see better shape and larger muscles already, so I know something is working. How is this explained? Btw, I’m 49, 5’10” and about 190 lbs.