cardio is based on the human heart, and how to maintain it healthy. cardio vascular health is keeping the heart healthy and active in order to function, a doctors recommendation is to exercise for at least 30 minutes a day, but the activity has to be intense. keeping your heart active is very important because its one of the main organs in your body and you cant live with out it of course. some cardio vascular activities are running, swimming, soccer, football, basketball, and other sports. these sports warm up your heart and keep it healthy, the time recommended to practice or play these sports is a good 30 minutes or more to get a good exercise. for example basket ball, in order to be a good cardiovascular activity, it has to be a intense game, full court with unstopping running going back and forth for 30 minutes. you can live a healthier life by first eating healthier and leave your old diet in the past. you should exercise more often and try to be more active in sports.