Fitness Guru Kayla Itsines' 28 Days to a Bikini Body

The Instagram fitness queen talks about her upcoming book "The Bikini Body" and shares her exercise and diet tips on "GMA."
5:27 | 01/03/17

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Transcript for Fitness Guru Kayla Itsines' 28 Days to a Bikini Body
those new year's resolutions. Instagram fitness queen Kayla itsines. That's perfect. I got it right. She has millions of followers. First, we're going take a look at Kayla's story. ??? she's transforming our workouts and our bodies. All on social media. 25-year-old Kayla itsines. Blowing up her 14 million followers' news feeds with her wildly viral bikini body guide. The proof is in her post. Showcasing her own and others success stories. A handful of the incredible before and after transformations from her 28-minute high-intensity workouts. The Australian personal trainer hitting the road. Packing jims across the globe and motivating women to take back their bodies. Now, with her new book, the bikini body 28-day healthy eating and lifestyle guide, she's kick starting your new year right now. We have been looking forward to having Kayla with us. Aussie, aussie, usaussie, oy, oy, oy. I digress. You on Instagram. Those workouts. Give us a move for our audience. They want to move. Something supereasy you can do in your share. Squats. Make sure your legs are on a 90-degree angle. Stand up, sit back down as fast as you can. Just keep going. Perfect. That's perfect. Anybody can do it. If you're at home, you're watching at home, do it as well. 100%. Hop up off your chair. All right. As you were. Seated. It's all about getting the heart rate pumping. It's about what we consume. Why a 28-day plan. What is te behind 28-day plan? I want women to have this for life. I think 28 days is a good way to develop a habit. It looks delicious. You showed us one day. Give us a look. Porridge with figs. You can swap this out for any of the other fruits. This is a beet root dip. Great for the kids. Leave it on the counter. They'll come past and eat it and don't realize how healthy it is. Moroccan chicken pita. Something women love is yogurt and berries. I mixed it together. This is shrimp. At the moment, it's chili, lime, coconut. Some rice. Some greens. Women love superhealthy but filling. Do you put the shrimp on the Barbie? Shrimp on the Barbie. I love it. Someone would see this and go, that's a lot of food. You say, you need to have -- You need it. All through the day. You said five meals? Five meals. Five food groups. I think what women do when they wanted to go on a diet is say, I'm going to cut out carbs. I think women have said that. I have heard someone else say it. I've got the rice. The quinoa. Women can enjoy the meals. That is good. You're big on this. How many of you if you'ring look to cut back that you count calories? How many of you consume like the calories? You're saying that's not the way to go. Why? It develops an unhealthy mind set. When you focus on a weight on a scale or a certain amount of numbers, I don't want it to define women's worths. We hear it so often. You're saying go a different route here? I want them to be healthy, fit, strong, and eat foods like this and not look at a scale and be like, that's what I'm worth. How did you get started? I started out of school. I did teaching at university. I did my personal training course. I loved it so much, I said I would go back to uni. I never went back. I met my partner. We have done the sweat with Kayla app. It's out. Now the book. The millions and millimeters of followers that you have, has that surprised you? It does. I stay humble. That's my grandma and grandpa. I never moved from Adelaide. I want to help people. My mum is like that. I'm like that. She's a very giving lady. I know. You're just getting started. Thank you for being with us. This book is fabulous. It's easy. It's "The bikini body." It's available now. For more, Kayla will join us after the show on Facebook. You'll get recipes on our site. You'll meet people she's motivated and will give us tips. It's the start of the year. We want to get healthier. Coming up, breakout star

This transcript has been automatically generated and may not be 100% accurate.

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