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<?xml-stylesheet type="text/xsl" href="https://blogs.mercola.com:443/utility/FeedStylesheets/rss.xsl" media="screen"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/" xmlns:wfw="http://wellformedweb.org/CommentAPI/"><channel><xhtml:meta xmlns:xhtml="http://www.w3.org/1999/xhtml" name="robots" content="noindex" /><title>The Hidden Factor That Can Quietly Cancel Out Your Workouts</title><link>https://blogs.mercola.com:443/sites/vitalvotes/archive/2025/11/29/the-hidden-factor-that-can-quietly-cancel-out-your-workouts.aspx</link><description>New research suggests that toxic air may reduce many of the health benefits we normally gain from regular exercise. In an international study following more than 1.5 million adults for over a decade, long-term exposure to fine particulate pollution (PM</description><dc:language>en</dc:language><generator>CommunityServer 2008.5 SP1 (Debug Build: 31106.3070)</generator></channel></rss>