A health and fitness management system that employs an algorithm to determine suggested recommended actions for a user to improve their health and fitness. The system obtains a user's weight from a scale. The user is never informed of their weight. Other data can be collected and included when calculating a health index number. Base line data, such as age, ideal age, initial weight, current weight, ideal weight, etc. can be considered in the algorithm. Examples include the user's environment, sleep habits, exercise routines, medical records, and the like. The health index number is used to determine recommended actions, which can include changes to environments, routines, activities, etc. Data collection, the algorithm, and other features of the system can be provided by an Application operating on a portable computing device. Features of the portable computing device can be employed to automatically acquire data for the algorithm.