Personal Trainer One is all-in-one food, exercise, and weight management software. A food journal keeps track of whatever one eats, automatically calculating and analyzing nutritional information in a variety of formats. An exercise journal records physical activity for convenient reference. Separate, detailed support exists for cardiovascular/sport and weight lifting activities. Other resources include a BMI calculator, caloric requirement estimator, and recipe book that automatically generates a standard nutritional label for virtually any dish. A weight loss consultant is integrated with other program features, and can figure how many calories one can eat and still meet a desired weight on schedule. P.T.O. has a flexible, user-friendly interface, so as many or as few of the aforementioned features can be used as desired. Personal Trainer One is a valuable companion for fitness enthusiasts, those working to lose weight, or others interested in keeping accurate dietary records.