 Your heart is basically responsible for pumping all the blood throughout your body. And blood, of course, carries oxygen. It carries nutrients. It allows the toxins and the waste that we are bombarded with, toxins in the environment, microplastics, you name it. It allows that stuff to get out of the body if the heart is strong. People who have weak hearts, you see fluid damming up in their lower extremities. They start retaining water.