Positive pressure

Learning to put pressure on the water with your hand and forearm through the catch is important for a number of reasons. 

The pressure that you put on the water

  1. Enhances the distance per stroke
  2. Supports body rotation as you use the pressure on the water created by the hand and forearm to drive the hips
  3. Reduces arm turnover
  4. Provides the opportunity to have more relaxed breathing technique as there is more time between strokes
  5. Improves timing between strokes

The arm recovery and the arm movement under the water are related, in the fact that if your recovery technique is strong then you are more likely to be in a better balanced and in a position to enhance what you are doing under the water.