Why is there is no resistance when I breathe in through my POWERbreathe Classic?

This could be because the sleeve that is placed over the adjustment gauge has moved or is not on straight. When undertaking your breaths, especially during a rigorous training session, the sleeve can occasionally move and push against the adjustment gauge, opening the valve. Resolve this by ensuring the sleeve is on straight. You could also try holding the POWERbreathe at the top to prevent the sleeve moving. During very intensive training you may want to remove the sleeve altogether and hold the top part of the device.

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