Originally Answered: How can I get a flat stomach without losing and other body fat?
Like the others have said, you can't reduce the fat of only a certain portion of the body. Biological impossibility without losing a limb. The best thing to do for reducing stomach fat in an instant is to practice good posture: shoulders back, chest out, and not tilting the butt or stomach too far in either direction.
Another great plan is to eat smaller portions of your food more often throughout the day, and not all at once so that it doesn't stretch the stomach and protrude out. Like another mentioned, eat "clean" foods that will digest quickly and not sit and protrude in your stomach: fruits, veggies, whole grains, nuts, fish, egg, and chicken. Remember, HEALTHY FATS, found in nuts, fish, peanut butter, etc. are GOOD for your body. They're ESSENTIAL! Big Mac fats are not.
Chocolate buttons are fine, just eat 'em in moderation and less often than healthier choices for a trim waistline. Eat because you're hungry, not to entertain yourself. If you can replace the snack with a healthier snack than you're truely hungry; if you can't settle for less than the snack you want, than it's just a craving and not true hunger. Drink water instead to fill your stomach and entertain your mouth in healthier way.
NEVER starve yourself! Your body will cling to its fat desperately and its a lose-lose situation.
Also, very important to overall health is to keep drinking plenty of water. The more often you drink, the less water weight your body will hold onto. The less emergency water the body holds onto, the less bloating due to water weight. Just don't overdo it with the water all at once. Too much of a good thing is still bad.
Exercise? Sure doesn't hurt. Cardio is great for the heart, but resistence training has longer lasting benefits and whereas the effects of cardio stop benefiting the body after only a few hours, working out with weights or body weight gives on-going benefits for fat reduction. For trimming the stomach specifcally, try planks, lunges, squats, and push ups. Keep your abs pulled in and tight all throughout the workout so that they get stronger and help keep your stomach pressed in closer to the body. Don't workout if you're still sore from the last workout. Let your body heal and then get back to exercising.
Good luck! Keep at it every day and if you slip one day, don't sweat it! Get back on the healthy wagon the next day. One bag of chocolate buttons isn't going to ruin many days of hard work.