Two Beat Kick
For a full arm cycle, the swimmer kicks twice. When performed well, it's like a switch-kick moving between the two positions.The advantage of this kicking style is that it uses less energy and so can be more energy efficient over longer distances. Elite swimmers such as Laure Manadou, David Davies and Shelley Taylor Smith won many gold medals using this technique. It's used in pool events but is especially common in elite open water swimming and triathlon.