Most Helpful Guy
Work out MORE. And take a weight gainer instead of a protein shake. You will put on good muscle and your body will not be starved of good fats (poly & mono unsaturated) it needs while you work out. It will make you feel better too.
One Gaspari Real Mass shake (they are big) will add 1200 calories to your diet every day. So you will gain a pound every 3-5 days depending on your metabolism. You won't get fat.