Activity burns calories. Try to squeeze in activity whenever you can. All those calories you burn up doing chores and errands count, too.
Is your grass growing? Try mowing with a push mower (walking). That necessary chore burns 408 calories an hour.
If you live in an asphalt jungle with no lawn outside your door, head to a gym that has a pool and swim some laps. Swimming at a moderate speed for a little over an hour burns 504 calories.
This is tip #6 in The “Five” Challenge to lose five pounds in five weeks by decreasing your calories by 500 or increasing your activity for an additional 500 calorie burn (or any combination of the two).