Activating our core muscles has been a mantra by many professionals helping their clients in seeking better overall strength, protecting from back pain and improving performance. But what I learned early in my PT practice is that our brains do not know muscles, only movement.
Human beings seem infinitely adaptable. But there is no silver bullet, no quick fix potion that will make a soldier, sailor, airman or Marine invulnerable to five, six or more tours of duty in today's war zone and the separations from loved ones.
As difficult as it is to define qi, it is even more difficult to transmit it through a book. The Key To Qi doesn't attempt such a miracle, but offers ways of understanding the concept and recognizing the presence of vitality in one's life.