Recently, I started taking tai chi classes. I have always been interested in studying a martial art, particularly one of the healing and internal styles such as tai chi.
Being in the flow, also called being in the zone, is a remarkable state. When one is in it, no effort is required to create the results you want to achieve.
There is an old adage: write what you know. I do not know about battle first hand. But then I have never lived in a whorehouse or witnessed a crucifixion either, and I have already written about both as though I have.