Several years ago I was diagnosed with COPD (chronic bronchitis and emphysema). I have had to sleep with oxygen and whenever I was exerting myself I had to get oxygen help from a portable unit. After 2 months of Dahn Yoga and Brain Wave Vibration, I no longer use my portable unit when I exert myself, and totally enjoy the freedom of exercise without the unit.
–Suzanne Einhorn
Emphysema– Breathing Better
January 6th, 2010 
dahncenter 
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