Fitness monitor system

According to U.S. Department of Health and Human Services, 26% of U.S. adults between the ages of 20 through 74 are overweight. Exercise is a consequential and rewarding strategy to lose body fat and improve one´s health. Throughout a large portion of aerobic exercise, a linear relationship exists between heart rate intensity of the exercise and the oxygen consumption (and therefore caloric expenditure). Thus if the heart rate is known, caloric consumption can be reasonably estimated. This paper introduces a new piece of electronic device - fitness monitor system, specially designed for heart rate monitoring and weight management. Its output parameters prefigure one´s fitness level and meanwhile give warning if there´s health abnormality.