<Tr> <Td> calisthenics (e.g. pushups, situps, pullups, jumping jacks), heavy, vigorous effort </Td> <Td> 8.0 </Td> </Tr> <Tr> <Td> running jogging, in place </Td> <Td> 8.0 </Td> </Tr> <Tr> <Td> rope jumping </Td> <Td> 10.0 </Td> </Tr> <P> The body uses different amounts of energy substrates (carbohydrates or fats) depending on the intensity of the exercise and the heart rate of the exerciser . Protein is a third energy substrate, but it contributes minimally and is therefore discounted in the percent contribution graphs reflecting different intensities of exercise . The fuel provided by the body dictates an individual's capacity to increase the intensity level of a given activity . In other words, the intensity level of an activity determines the order of fuel recruitment . Specifically, exercise physiology dictates that low intensity, long duration exercise provides a larger percentage of fat contribution in the calories burned because the body does not need to quickly and efficiently produce energy (i.e., adenosine triphosphate) to maintain the activity . On the other hand, high intensity activity utilizes a larger percentage of carbohydrates in the calories expended because its quick production of energy makes it the preferred energy substrate for high intensity exercise . High intensity activity also yields a higher total caloric expenditure . </P>

What is the difference between watts and mets