I have been doing weight watchers for about 10 months now, and have lost 45 lbs. I had a plateau for almost three months and it was so frustrating! The way I finally broke it was upping my exercise intensity and also lots of variety! In a week, I will probably hike twice a week (one long, one short), one long bike ride (20+ miles), do a spinning class and an aerobic class at the gym, and then be slightly active for my 6th day. Usually entails riding my bike to work, or to lunch, or taking my dogs on a long walk, etc. You can't be afraid to mix it up, and also be sure to take measurements! At first I was losing weight ever so slowly when I upped my exercise, but my clothes were fitting so much better.