Swimming technique involves the proper body position, stroke mechanics, and breathing patterns to enhance efficiency in the water. Key elements include maintaining a streamlined body to reduce drag, using a flutter kick for propulsion, and executing arm strokes that maximize distance per stroke. Breathing is also crucial; swimmers should turn their heads to the side during strokes like the freestyle to inhale without disrupting their rhythm. Practicing drills can help improve these techniques, making swimming more effective and enjoyable for both competitive and recreational swimmers.