I happen to also have a poor metabolism, and I found that I need a lot of exercise to stay within an acceptable weight. tried eating healthy, and dieting, but alone it never worked. I think that if just eating healthy isn't working for you, you should figure out a work out plan. Don't start off too hard, but make sure you push yourself. There is a good chance it will suck, and a good chance it will hurt. You might even get injured, but run, do situps, pushups and pullups, and you really should have the basics. Make sure you make it a routine, it needs to be planned and consistent. One of the hardest parts to loosing weight is to keep with it. You might want to create a circuit for yourself, and break up strength workouts across the day, but make sure that they get done. Another way to get in work outs is to do something like watch tv or video games, but whenever there is a loading screen or a commercial do situps or curls or pushups or what have you. The hardest part will be stick with it.