Ditto on what Mermaid02 said.
The only thing I might want to add, is that if you get your body used to not eating the flex points, or low points, when you go into maintenance, your body will gain pounds when you add extra points in. If you start off eating more in the beginning and you loose weight eating a little more, when you go into maintenance, your body will be able to tolerate more points. I have seen many people talk about how they can't eat above 18 or 20 points in maintenance (on the WW' Bulletin Boards), because they ate at the low end of their ranges while trying to loose. Now that they are on maintenance, they can hardly eat anything.
To combat this, I will not lower myself down to the lowest level of points. In fact, I should have done that this week. I wiegh 149.6 and instead of having a target of 20, I will keep my target of 22. I eat all my AP points each week, and pretty much most of my flex points. I still continue to loose weight, and I average between 25-30 points day. I like the flex points better because I get to eat more. When I used a range I ate between 20-25 points, and would bank some and have maybe a 30 point day once or twice a week and sometimes I wouldn't do that either.
Moral of the story is that your metabolism slows down as you eat less. It wants to hold on to your fat to store for use during the "lean times". Since we aren't cave men, we don't have lean times usually and therefore our bodies learn to stay within this range. I also think that there is a lot of good that comes from mixing your days up during the week. If you ate only your target, your body gets accustomed to that. If you shake it up and have 22 one day, 26 one day, 24 one day, 30 one day etc. Your body has to keep guessing what you will do next and your metabolism stays revved up.
I hope this made sense.
Melanie