I found the scale fluctuated around 5 lbs bodyfat with me, depending on water levels, so I just threw it out, and get a Bioeletrical impedance test every so often, as long as my weight doesn't fluctuate too great on a normal scale. I didn't like the Tanita scales very much. Make sure you bought the Athlete version as there are two versions, and the non athlete one is for more sedentary people, probably not ur cup of tea.