Most adults in the country have read enough research, watched enough infomercials, or visited the doctor enough times to know that exercise is important. Despite knowing that exercise is important, many people are still far too sedentary. Can you imagine how many more people would be inactive if the only way we were told we could get exercise was by playing basketball? The point of exercise, if you ask your doctor, is pretty clear: to elevate your heart rate for an extended period of time. It simply does not make sense to limit the choices for an activity that could lead to that end product. It does not make sense for exercise and it does not make sense for learning.