{"id":17317,"date":"2023-03-30T10:47:07","date_gmt":"2023-03-30T09:47:07","guid":{"rendered":"https:\/\/blog.fourthfrontier.com\/uk\/?post_type=web-story&p=17317"},"modified":"2023-03-30T10:47:08","modified_gmt":"2023-03-30T09:47:08","slug":"measuring-heart-health-understanding-heart-rate-and-cardiac-fitnessding-heart-rate-and-cardiac-fitness","status":"publish","type":"web-story","link":"https:\/\/blog.fourthfrontier.com\/uk\/web-stories\/measuring-heart-health-understanding-heart-rate-and-cardiac-fitnessding-heart-rate-and-cardiac-fitness\/","title":{"rendered":"Measuring Heart Health: Understanding Heart Rate and Cardiac Fitness"},"content":{"rendered":"