In the previous article, we talked about using the whole body. In this lesson, we will concentrate on the core muscle groups. Beginning paddlers use their biceps more than any other muscle group. They tire very quickly, especially on long flat water paddles. Racers and experienced boaters use the arms more like struts and pull the paddle blade through the water with their abdomin, pectoral, shoulders, and upper back muscles. Compare the size of those muscle groups against the much smaller biceps and you can easily understand why seasoned boaters can paddle all day and make it look effortless. Here is a good article on an efficient forward stroke from a racer's perspective: Racer's Efficient Forward Stroke.