The Bubishi ("The Bible of Karate" - see Patrick McCarthy's newest translation) has Bladder as the time of the Monkey, 3-5pm (just before Kidney time, 5-7pm, on the meridian clock). The hara diagnostic area, which can be seen in the previous post (below), is in the area of the bladder. Masunaga lists Bladder associations (see Zen Shiatsu) under kyo (empty) and jitsu (full): Psychological associations when kyo (empty, as in weak or deficient): "Strained nerves, stiffness and sensitivity in the body; complaining all the time; easily frightened, night sweating, anxiety." And physical associations when kyo: "Nasal congestion; heaviness and pain in the eyes; migraine headache on back of head; malfunctioning of the autonomic nervous system, oversensitivity; poor circulation especially in hara and legs...
Zen Shiatsu: The Legacy of Shizuto Masunaga
John 9:35 And Jesus said, "For judgment, I have come into this world, that those who do not see may see, and that those who see may be made blind."
From The Essence and Application of Taijiquan by Yang Chengfu, grandson of the Yang style founder; Yang Chengfu remembering an explanation from his grandfather:
"...The gentlemen of today know only that our nation's troubles come from poverty; they still do not understand that our nation's sickness lies in its weakness. Therefore, those formulating our national policies vie for plans to save us from poverty, but I have yet to hear a plan to rouse the failing or raise up the weakened. Yet this country is riddled with disease... the proper path for saving the nation is certainly to recognize the urgency of saving ourselves from weakness. To neglect this, one might as well have no plan, for it is like treating only the surface."
Martial arts is largely about self-improvement. "You're greatest enemy is yourself" is a common adage. This reflects the constant process of transforming food into chi. Just as the body constantly produces life-force through the absorption of life-force from external sources - food, sun, air, etc., balance is constantly re-created each moment. This is health. Because this is our nature as living human beings, it is a good thing to constantly improve (train) ourselves.
Karate-do, Judo, Kobudo, Iaido