Teaching heeding builds a communication link between yourself and the horse in the horse's language. That is why it does not require strength to take horses to the highest levels. There is a MythUnderstanding that men are the best trainers because they are stronger than women. In reality, training has nothing to do with strength. It is about mental games.
Horse training is a mental game played in a physical medium.
Your primary objective as a trainer is rhythm and relaxation. What the horse needs to achieve this is steady, physical work at a mental level that you create which is alert enough to pay attention to you but not frightened and not tense. You have to be open minded and calm in order to study and understand. And it is exactly the same situation with the horse. An awful lot of people think that if they do something to the horse that makes it act more excited, that the horse is going to learn faster or respond better.