Most athletes\u2019 competitive years are in their 20s and 30s, but 61-year-old Ni Xia Lian has been playing professional table tennis for nearly 50 years. The Chinese-born Luxembourgish table-tennis player was one of the oldest athletes at this summer\u2019s Paris Olympics. On the Science of Success, WSJ\u2019s Ben Cohen speaks with Ni and Tommy Danielsson, her coach and husband, about how she\u2019s maintained her longevity in competitive sports.\n\n\n\nWhat do you think about the show? Let us know on Apple Podcasts or Spotify, or email us: FOEPodcast@wsj.com\xa0\n\n\n\nSign up for the WSJ's free The Future of Everything newsletter.\n\nLearn more about your ad choices. Visit megaphone.fm/adchoices