Hi I dont really know what 1000 entails,but, I know on one of our group newsletters it said if you eat any carbs when on SS such as a piece of toast you would instantly gain 4-5lbs in water our CDC said this would happen as we moved up the plans,but,eating 1000 cals a day surely you cant be putting on actual weight as it isnt enough to sustain your daily functions and have cals left over.Personally I think it is some form of water retention,blimey youre only on 190 cals a day more than on 810 and you were still losing on that,dont get disheartened when you look at it logically how can you possibly be putting on weight with anything other than water!