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“Breathing right is unquestionably the single most important thing you can do to improve your life. It will help you to live a longer more energetic and stress-free life” (Dr. Sheldon Hendler, The Oxygen Breakthrough)The Expand-A-Lung is ...The #1 Breathing Exerciser for Shortness of BreathThe #1 Ranked Respiratory Fitness Trainer by The L.A.