Knowledge Base > Testimonials > Altitude Training > Success Story: Shelly Kiefer

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Kiefer Sports – PowerLung Retailer

Just wanted to let you know that I worked out on my PowerLung before heading out on an 8 day trekking expedition in the eastern Himalayas (Bhutan). Quite a trip, and I am sure that the training helped with adjustment to the altitude and making it over 2 16,000 ft. passes without too much difficulty.