Lower your calorie intake, girls.
That’s how I stay thin, and I haven’t walked in 14+ years. I try not to eat mre than 1300 calories a day, and so far it’s worked. I haven’t become that “overweight” chic in a chair. I eat lots of small snacks during the day (no big meals), I drink coffee every morning, don’t smoke, don’t drink pop, and try to eat as little processed food as possible.
Here’s a great site – Hungry Girl – to give you the latest food/health trends out there.