In the breaststroke the legs and arms must be synchronized. The arms are allowed to make three different moves. The first move is out away from the swimmers body, then the arms go down toward the bottom of the pool and then the arms are pulled together and are brought forward together from the breast and then the movements start over. The leg kick consists of keeping the legs together bending the knees thus bringing the feet forward and then kicking the feet back which straights the legs. The breaststroke is the most complicated and physically demanding of all the different types of strokes.