Maintaining physical fitness and good health is a workout in itself. And because body compositions vary from person to person, our ideas of physical fitness and good health do too. But are those ideas accurate? Probably not. But with the palm-sized Body Check Ball, you can get accurate, individualized readings on your body fat, bone density and muscle percentages on an easy-to-read LCD screen – readings that will held you understand and negotiate long-terms trends in your health. The Body Check Ball also features storage for up to 10 different user profiles and clock and alarm functions.