Weigh a 32 ounce bottle of water on your scale.
Water is weight. As you heard above, no one can gain 3 pounds of fat in ONE day! Water is a funny thing, it just moves around. Our bodies are funny with it too. Sometimes we hold it..others we don't. When you LOSE 2 pounds overnight, do you honestly think its all fat loss. Of course not! This takes a long time. We have to be patient despite the darn rollercoaster ride of ups and downs (darn it!)