Hi, I've been on Atkins since May 1st, and have only lost 12 lbs, but I've lost over 20 inches and a full dress size. If you are exercising a lot, then you will slim up before you will see the scales move. Just remember that lean muscle weighs more than fat, but takes up less space. Frankly, I weigh maybe once a month. I go by how I feel and how lose my clothes are getting. Hope this helps.