Re: New interview with Christian Tissier Shihan (in English!)
He is very explicit on how to develope ki.
"We could of course develop exercises such as the ones proposed by Qigong in order to specifically work on breathing. We could also specifically work on flexibility or other things but to what end? I consider Aikido as a whole system that as been well thought. It is therefore useless to concentrate on only one aspect of the art, in particular if it is to the expense of practice time."