Excellent product to enhance the quality of each training and improve endurance(aerobic/anaerobic). This is what's known as "restricted-air training" or "inspiratory muscle training."
Will improve the body's function & capacity.
Simulates training at altitude by making your body work harder to breathe, over time your lungs will adapt to this type of air resistance and use available oxygen more efficiently— and, as a result, increase your lung capacity and aerobic thresholds, too.
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