2. Coordinate breathing and synchronize it with the muscular activity... When you inhale, your body becomes light. When you exhale, your body becomes rooted.
3. Listen to your breathing and become aware of every part of your body...
Understanding the physical and metaphysical precepts of hard and soft (gangrou in Mandarin, goju in Japanese) one must learn that it is the even balance between the two that enables one to overcome the greatest adversary of all; oneself.
- The Bible of Karate: BUBISHI Translated with commentary by Patrick McCarthy (Tuttle)