Peter,
As a relatively new student of Ki Aikido, I constantly check this website below:
http://universalmind.way-nifty.com/u...lmind_english/
Shinichi Tohei Sensei president of Ki No Kenkyukai and son of Koichi Tohei Sensei writes and explain things regarding Ki and its application including relaxation and other topics pertaining to Ki.
Check out this website and look into the archives and you might be surprised how applicable Ki principles are.