Have there ever been specific meditations, qigongs, kata, exercises, etc. that were developed by martial artists to allow retraining this?
How about zazen for starters. Does not Zen breathing and meditating play a primary role in controlling the mind and body. The point of the breathing is above all to establish a slow, strong and natural rhythm. Then with regular practice of zazen breathing, it becomes habitual in exercise, our daily life and during sleep. Through Zen breathing in zazen, the more your energy increases and the mind empties and the intellect is calm, peaceful, at rest, nothing obstructs mind and body, "thinking without thinking if you abandon all, you will obtain all". Jim