:Breathing exercise is an exercise intended to promote effective and healthy breathing control.This is the most common of the pulmonary function tests (PFTs), measuring lung function, specifically the amount (volume) and/or speed (flow) of air that can be inhaled and exhaled.This Respi-Ex deep breathing lung exerciser is an innovative system to exercise respiration through inspiration. This device is composed of a base and a central part divided into 3 chambers containing 3-float balls, different in colour (each chamber expresses the inhalation value per second: 600 (Red), 900 (Yellow) and 1200 (Blue) ml/cc ).Instruction for use: Hold the unit in an upright position.Exhale (breathe out) normally and then place your lips tightly around the mouthpiece at the end of the tubing.
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