The Single Most Effective Exercise You Can Do to Get in Shape, According to Katie Austin

The fitness influencer shared her best tips and tricks during Miami Swim Week.
Katie Austin.

Katie Austin.

Three-time SI Swimsuit model Katie Austin is revealing her biggest exercise secret, and it’s an unexpected one. The fitness influencer is the creator of the Katie Austin App, an online, subscription-based platform that is home to more than 250 workout videos, healthy recipes and lifestyle tips.

“What’s the most impactful single exercise you can do if you want to get in shape?” fellow model Christen Harper asked Austin during a Q&A-style game of Jenga during Miami Swim Week earlier this month.

“There’s not really one workout move I would say, but if I was gonna say an exercise, it would be walking. I’m a huge walker. I love to walk,” she explained. “I think walking is so good on the body for every age demographic—[it’s] low-impact, good on the joints, helps boost your mood and you can really, really lose a lot of weight and tone up really fast with walking. You could do it with a partner.”

“Katie Austin has a really great new series out now [on the Katie Austin App] called ‘walk it out’ and it’s amazing and I love it so much,” Harper gushed.

Harper, 30, and Austin, 29, were named co-Rookies of the Year in 2022 and co-winners of the Swim Search open casting call the year before.

Austin’s guided walking series is filled with “inspo for your wellbeing as you get your steps in.” The Austin AF podcast host talks your through exercises to elevate your walk, while also offering her best wellness advice.

“Walking is seriously how I destress for my mental health, how I get my movement in and motivation for my podcast,” she explained in a TikTok announcing the new addition to her platform. “So why not combine all of this? I’m here to help you make the most out of your hot girl walk. Let’s walk it out together.”

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Ananya Panchal


Ananya Panchal is a NYC-based Lifestyle & Trending News writer at SI Swimsuit. Before joining the Swim team, the Boston University Alum worked for culture & entertainment beats at Bustle, The San Francisco Chronicle and the TODAY Show. When Ananya is not writing or doom-scrolling on social media, she can be found playing sudoku, rewatching One Tree Hill or trying new restaurants. She's also a coffee and chocolate (separately) enthusiast.