The older you get generally your matabolism will slow down, and try to eat more, bigger meals w/ a variety of foods. If you eat the same thing over and over your body will get rid of the unessasary protein, nutrients because you already have enough of that supplement being fed off already. Keep a good range of food cuz your body needs all kinds of vitamins, proteins, etc. to grow and feed off of. Even try weight gainer, it should pack on the right kind of calories for your muscles need to feed when you are done working out, or relaxing. Lol, lots of beer would get you fat, but that's not the kind of fat you want lol.