There will be times when you can only manage a fifteen-minute walk as part of your workout regimen, and that’s totally OK. Perhaps you are now working more hours between the hours of nine and nine than five, or perhaps daycare takes up all of your free time. Regardless, we sought a cardiologist’s opinion on the age-old question: Is walking an effective form of exercise? The short answer is yes, and that should be your first piece of information. But that’s not all. If you want to know why walking is good for your health and what cardiologists believe about it, you should read on.