@markus_marthaler: Two approaches must be pursued to improve the swimmer’s technique and to enable him to swim faster: 1. The drag the swimmer creates in the water needs to be reduced. 2. The propulsion the swimmer generates in the water needs to be increased. The principles below can all be classified under these two approaches. -Improving Your Posture, Line and Balance -Using Your Core Muscles -Compact and Efficient Kick -Anchoring Your Arms with the High Ellbow catch to increase distance per stroke -Consistant interval trainings -Patience