For both weight loss and weight gain, dieting is rarely a linear process. Over the course of a week, it’s very common for your body weight to fluctuate on a daily basis. Hormonal issues, sodium intake, hydration levels, food that’s still being processed through your digestion and waste system…all of these factors can increase or decrease the number you see on your scale. It’s best to weigh yourself only once per week at the most. Pick a day and time that you know will be consistent. Some people prefer Monday weigh-ins, although you may be a bit heavier if you ate foods over the weekend that aren’t normally part of your diet. Others prefer midweek or Friday weigh-ins, as this lets your body settle into a normal routine, allowing for a more accurate reading. The most accurate option is to weigh yourself every day, and track your weekly average, though the daily weigh-in can be stressful for some.