Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. The thin air at high ...
Chet Fortune works out using an altitude training mask at to increase his lung capacity. Fortune is a co-owner of Warrior Fitness Center in La Vista. Video: Weird mask, great workout In April, a few ...
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