Improve your capacity, productivity and breathing performance with this high-quality exercise mask. By restricting your air supply with the help of this mask, the intercostal muscles and diaphragm have to work harder, this allows you to strengthen your respiratory muscles to better workout capacity and performance. The mask comes with four levels: for getting started we recommend the first level for BEGINNERS; if you're exercising regularly and hard you should choose the second level for ADVANCED; if you want to push your limits harder the third level for PROFESSIONALS is perfect for you and if you are ready for the ultimate challenge you should try the EXTREME level, we recommend you first train in all other levels. By using this mask regularly you will have stronger breathing muscles which will help you to supply your body with the oxygen it needs, even when you're training without mask afterwards.
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