The flutter kick is a swimming technique used primarily in the freestyle and backstroke strokes. It involves alternating leg movements, where one leg kicks up while the other leg kicks down. This motion helps to propel the swimmer forward and maintain body position in the water. To perform the flutter kick, swimmers should keep their legs straight but relaxed, with toes pointed. The kick should originate from the hips rather than the knees, allowing for a smooth and continuous motion. Proper technique enhances efficiency and speed in the water, making it a fundamental skill for competitive swimmers.