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Feature

"USED BY NAVY SEALS, ATHLETES & COPD PATIENTS". THE BEST 7 MINUTE EXERCISE TO BOOST ENDURANCE - THE #1 CHOICE OF THE L.A. TIMES REVIEW- "SUPERIOR QUALITY AND BEST VALUE" - "MOST COMPACT (4") AND PORTABLE" - "EASIEST TO USE " - "MOST EFFECTIVE" - "IMPROVES ENDURANCE, BREATH HOLDING & SHORTNESS OF BREATH" - "PROVIDES 100% ADJUSTABLE RESISTANCE FOR INHALING & EXHALING". (FOR MORE INFORMATION VISIT WWW.EXPAND-A-LUNG.COM)
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100% ADJUSTABLE RESISTANCE VALVE FOR BOTH, INHALING AND EXHALING BREATHING EXERCISE. - RANKED #1 ABOVE ALL OTHER BREATHING EXERCISERS AND ELEVATION TRAINING MASKS!!! - VERY EASY INSTRUCTIONS COME IN THE PACKAGE.
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Description

The flow of air in and out of the alveoli is called ventilation and has two stages: inspiration (or inhalation) and expiration (or exhalation). To accomplish this, the whole thorax moves and changes size, due to the action of two sets of muscles: the intercostal muscles and the diaphragm. These are the muscles that are strengthened by using the Expand-A-Lung Breathing Resistance Exerciser. In essence, you inhale more oxygen, and you exhale more carbon dioxide. The result is a substantial improvement in shortness of breath and endurance through better breathing. All is done naturally, with the help of the Expand-A-Lung Breathing Resistance Exerciser. 5 year unlimited warranty for parts and labor.