I have created a food journal in Excel that calculates points and calories. I also programmed it to give me a breakdown of Protein, Carbs and Fats per each meal and at the end of the day. I have noticed that sometimes when I eat 20 points on a given day, I could get as high as 1600 calories and sometimes I eat 20 points with 1400 calories give or take.
I found that if I eat more protein-type and less or no fibrous-type foods such as cottage cheese, yogurt, lean meats, and eggs that my points will hit 20 points quickly at only 1100 calories. But If I add more fibrous foods such as vegetables and whole grains such as unprocessed wheat bran, low-calorie but high-fiber breads, All Bran, etc. I hit 20 points at 1600 calories for the day.
WW Points are calculated by the "type" of foods you eat because you will notice that you can have lower points with how much fiber or little fat you take in.
I like the system because it really insures that I get a healthy balance of Protein, Carbs and Fats and the recommended Fiber per day.
It's also a good idea to flucuate calories, too, so that your body does not get used to the same regimen of eating. I think that we all can get into the habit of eating the same way everyday. If it is good to cycle workout rotations, why not food rotations as well. Our bodies are soooo smart and adjust quickly. I read that bodybuilders cycle not only workouts but their eating as well during the year. It is good to experiment to see if this works for you.
Good luck to you with WW. I think it is a great program to be on.
babydollsea