Denise Austin has been inspiring women to get fit and have fun for four decades. As one of the key figures of the â80s aerobics boom, she knows a thing or two about fitness trends and which exercises stand the test of time â and at 65, Austin is still going strong. Her latest project is a 30-minute free workout on her YouTube channel, made in collaboration with SlimFast and inspired by her iconic workouts from the â80s. âThings are just coming full circle now,â she tells Womanâs World. âI felt like I was back filming my exercise VHS tapes because I did so many of the same moves.â Here, Austin discusses the reason retro workouts are making a comeback, how her daughter is following in her footsteps, and some ways we can all stay more positive and healthy going into the holiday season.