Do you love running but don’t always love how your body feels afterwards? This cardio run interval session shared by Allyson Felix is for you. 40 year old Allyson Felix is one of the most decorated athletes in track and field history. she represented the United States throughout her career and became the most decorated athlete in World Athletics Championships history. She has earned 11 Olympic medals, including 7 golds, and a total of 20 World Championship medals. When it comes to running, few voices carry more weight than Allyson Felix; and with 31 major championship medals, it’s easy to see why. Recently, she shared a run interval session that feels especially relevant if you’re dealing with cardio burnout, joint sensitivity, or simply want a smarter way to train. Why Interval Running Hits Different Simply put, interval runs are running without burnout. It’s a structured session designed to give you intensity without excessive strain on your body or inflammation. Read over on Af...