hello i have been lurking--just got a username today. i have been on medifast 3 weeks and the beginning of week 4 is this coming thursday I have gone from 157 to 145. i have been on other styles of diets, and i have to say i really am enjoying medifast. it does cost money, but i have celiac/gluten allergy and that was expensive in itself. ok, so anyway...i have been working out for many years and i did not stop when i began medifast--the past couple of days my scale has been going up and down a few ounces here and there--but the thing is is that i dont care! haha; i have read a lot of posts about exercising on medifast and from being a long term dieter, i truly believe that yes--you may gain a few ounces or lbs during initial exercise, but it is not a death sentence. i have lost weight without exercise also, and ill tell ya i look a lot better WITH exercise than without....ID LIKE TO HEAR OTHERS ON MEDIFAST! THanks!