Actually not. But I am glad it worked for you.
Actually yes, unless you’re so overweight you simply cannot excercise (which would be WELL beyond 15 pounds) if works well. In fact you have it exactly reversed, it’s the last 10 to 20 pounds that are a bitch to lose through eating less and excercising more. If you’re 50 or 60 pounds over weight just adding 20 minutes worth of moving around a day for a couple of weeks will knock off a good 5 pounds, it’s when you start having less spare fat to burn that it gets harder.