Exercise More Naturally | SpaMagazine.com Here are a few earth-friendly options to get you started. Wear green workout clothes. Ditch the Neoprene (made from petroleum) and Lycra (made with polyurethane) and go with organic hemp or bamboo, natural fibers that are grown with less water and energy than cotton. According to the Japanese Textile Inspection Association, clothing made of bamboo is antibacterial and deodorizing-even after 50 washings. If you can't break free of cotton, opt for the organic version, which contains no pesticides, bleaches, or harmful dyes. (We're enamored with Patagonia 's hemp line, Clary Sage Organics ' organic cotton yoga line, and Prana 's sportswear line with a blend of bamboo, recycled polyester, and Spandex.) GET OUT OF THE GYM Exercise without electricity-draining equipment and lights that are on even when no one's working out. Here are a few earth-friendly options to get you started. Hit the trail. Find a good one t...