Sometimes, if I get on the body fat monitor twice in one day or two days in a row, there can be a difference in my reading. Is the monitor inaccurate?

Sometimes, if I get on the body fat monitor twice in one day or two days in a row, there can be a difference in my reading. Is the monitor inaccurate?

Because BIA relies on your body's level of hydration, your body fat reading can fluctuate on a daily basis. It can also differ from morning to evening depending on what you eat, drink and the amount of exercise you do. Women will also find their reading changes during the menstrual cycle.

To ensure consistent readings you should try to use the body fat monitor at the same time of day, under the same conditions each time. We recommend you try to use the monitor in the early evening, before you eat your evening meal. Most importantly, because body fat levels change slowly over a period of weeks, try to look for the long-term trend in your readings.