Dietary Supplements Include not only vitamins and minerals but also amino acids fiber herbal products and many other substances that are widely available. In general such supplementation is unwarranted for people eating a balanced diet. Low Active Physical Activity Level The energy that is required for an adult weighing 70 kg would typically include exertion equivalent to walking 2.2 miles/day at a rate of 3 to 4 mph in addition to the activities that are part of independent living. Frequency Is how often a person is physically active. Frequency along with duration and intensity affect the cardiorespiratory response to exercise.25 Hydration Refers to the amount of fluid in your body. It is important to replace any fluid your body loses during physical activity. Physical Fitness Is the ability to perform daily tasks without feeling fatigued or exhausted with energy left over for enjoying leisure-time activities and meeting emergency demands. It involves the performance of the heart and lungs and the muscle of the body. Metabolic Equivalents METs Is a ratio of work metabolic rate to standard resting metabolic rate. Resting energy expenditure is considered 1 MET. Therefore a 3 MET activity equivalent to walking the dog or bowling would require energy expenditure at a level equal to three times resting. Calorie Expenditure Is the amount of energy your body uses to do anything. For example you burn or expend calories when you walk swim sleep read and breathe. Anaerobic Exercise Requires your body to perform at a great effort for a relatively short duration. This type of exerciser requires your body to use stored energy that does not need oxygen to be released. Examples include weight training or sprinting. Flexibility Is the ability to move joints and use muscles through their full range of motion without discomfort or pain. Stretching Includes movements that lengthen muscles to their maximum extension and move joints to the limits of their extension.