<?xml version="1.0" encoding="UTF-8"?><urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9" xmlns:news="http://www.google.com/schemas/sitemap-news/0.9"><url><loc>https://www.performancenutritiondigest.com/p/faster-ultrarunners-experienced-greater</loc><news:news><news:publication><news:name>Performance Nutrition Digest</news:name><news:language>en</news:language></news:publication><news:publication_date>2026-09-18T11:03:01+00:00</news:publication_date><news:title>Faster ultrarunners experienced greater heat strain at Western States 🌡️</news:title></news:news></url><url><loc>https://www.performancenutritiondigest.com/p/caffeine-shifts-fuel-use-towards</loc><news:news><news:publication><news:name>Performance Nutrition Digest</news:name><news:language>en</news:language></news:publication><news:publication_date>2026-09-17T11:02:10+00:00</news:publication_date><news:title>Caffeine shifts fuel use towards fat during outdoor running ☕</news:title></news:news></url></urlset>