What you’re seeing on the scale, this gain-a-pound, lose-a-pound phenomenon, is probably just slight changes in your water weight. Everyone’s body holds on to a certain amount of water to make all of the chemical processes in our bodily systems work properly. Depending on what you eat and drink throughout the day, sometimes you lose a little bit of water weight, and sometimes you gain it. Dropping a pound (or gaining a pound) every day is insignificant, so don’t fret! Your water weight could vary by several pounds each day.