Powerbreathe and other similar devices
I can't seem to find any discussions about them in MTBR. Powerbreathe, Expandalung, weightlifting for your lungs etc.
POWERbreathe - How it Works - YouTube
Can anybody point me to an existing thread? If none, anybody use these devices? Wouldn't blowing up a hot water bottle do the same?
Mods: Request to move this in the General forums
Mtbr's 2016 Winter Biking GearReviews and Roundups
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