focus for this week: Why don't birds fly backwards ?
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do you know how you breathe
From I ask questions
breathing: life critical task, you can do it on your own, with the help of a device, conscious, while sleeping. Do you observe how breathing actually goes on? Do you observe what influences exhalation and inhalation have? E.g. when you do sports (swimming,...), when you are emotional, when you smoke, when you play an instrument, ...
edit 2011-10-02:
in the Tao Te Ching (Daodejing, 道德经), book 2, chapter 55: regulating breath is associated with strength/rigidity
