-Doctors, personal trainers, and nutritionists recommend the periodic measurement of body fat for maintaining proper health status. -Enjoy the ability to measure body fat easily by yourself, in the privacy of your own home, with the reliability and accuracy that is expected of today's registered medical devices. -Recommended in Body-for-LIFE and endorsed by the World Natural Bodybuilding Federation, Accu-Measure Personal Body Fat Testers have gold standard accuracy to within 1.1% of underwater weighing results!