The handheld device can be used as a stand-alone product, but the app offers some free games and exercises. For $8 a month, ...
It's a handheld coaching device that takes you through different breathing exercises, tracking your health stats at the same time. Each exercise has a different effect and is successful in making ...
It's easy to see the appeal of the handheld device ... For an artificial underwater breathing device that'd work like "underwater gills," Pollock says you have to solve three major issues.
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