Exploring sport online: Athletes and efficient hearts Sport & Fitness We all know that the heart is very important but what exactly does the heart do? Why is the blood so important? What functions do the lungs perform? In this free course, Exploring sport online: Athletes and efficient hearts, we will try to provide at least a basic understanding so we can answer these questions and begin to understand why knowing about the heart is important for all sports people. Before that we will take a look at the human body. The Open University The Open University Course text/html Y164_1 Y164_1 en-GB Copyright © 2016 The Open University Archive