Looking for suggestions to make a week long trip to 12000 feet of elevation more pleasant. I live in Mass on the coast (no elevation at all). I have been training on the nearest elevation I can find... did a century in the Adirondak Mountains with 5700' of climbing and a base elevation of 1200'. Next week I am doing the Mount Washington Century in NH. That will have 10-12,000 feet of elevation gain with a base height of 3000. My trip is to Taos, NM for some serious mountain biking. Last time I rode at 8000 feet my aesthma was crazy...there is NO air up there. We are doing one day of downhilling and several days of cross country, leaving our road bikes home. any ideas for getting my lungs ready for some serious abuse?