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By now you may know that traditional yoga mats, made from polyvinyl chloride (PVC), can be hazardous to your health and the environment. The manufacturing of PVC products releases harmful dioxins into the atmosphere, and even more dioxins can leech into the soil when these products end up in landfills. Phthalates, added to PVC mats to make them pliable, have been linked with cancer. Mats made from rubber and other natural materials are now readily available. How many of you have made the switch? What did you do with your old mat?