in “Clinical Acupuncture” Anton Jayasuriya has stipulated that the energy flow in the Ko or Destructive cycle changes (polarity) from Yang to Yin or Yin to Yang as it reaches the Target Organ, thus resulting in its “destructive activity” (revised Edition 2001), B.Jain Publishers § Ltd. Page-454 (para-2). This seems a little clumsy. Will you be kind enough to explain a little, just academically!