Read previewGarrett Madison has built a career on risking his life to stand atop the world's tallest peaks. Everest, oxygen is scarce. Lack of oxygen causes the body to produce more red blood cells, which carry oxygen from the lungs to the rest of the body. AdvertisementHow you can whip your body into Everest shapeIt's best to train for a high-altitude climb outdoors on hilly terrain. His company, Madison Mountaineering, has even created a training guide that can help whip your body into shape for an Everest-level climbing expedition.

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Persons: —, Garrett Madison, I'm, Madison, michelangeloop, he's Organizations: Service, Business, Madison, Everest, Madison Mountaineering Locations: Everest, summiting Mt, Lhotse, Nuptse, Madison, Washington