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TIRED OF BEING A SCUBA AIR HOG? THIS PRODUCT WILL IMPROVE YOUR BREATHING EFFICIENCY FOR BETTER AIR CONSUMPTION.---ALSO GREAT FOR FREE DIVERS!!!
Breathing Resistance Exercise = Stronger Lungs = Greater Lung Capacity & Endurance.
The #1 Choice of Swimmers, Divers, and Triathletes.
The"EXPAND-A-LUNG" breathing resistance exerciser is a new breakthrough for increasing lung capacity and endurance.-- Research from the University of Zurich supports that this type of exercise significantly improves the endurance of respiratory muscles, and increases the volume of ventilation.--
Breathing Resistance Exercise = Stronger Lungs = Greater Lung Capacity & Endurance.
The #1 Choice of Swimmers, Divers, and Triathletes.
The"EXPAND-A-LUNG" breathing resistance exerciser is a new breakthrough for increasing lung capacity and endurance.-- Research from the University of Zurich supports that this type of exercise significantly improves the endurance of respiratory muscles, and increases the volume of ventilation.--