A new investigational device (BIA/Vitality Analyzer™) is being compared to a United States Food and Drug Approved 'predicate' reference device (EFG®) to demonstrate that they provide equivalent measurements of body fat. Both devices are "over-the-counter" bioimpedance body composition analyzers (estimate of body fat). These devices are classified as 'Not Significant Risk' devices; they do not expose you to any significant risks.