Kayla Itsines was born on May 21, 1991, in Adelaide, South Australia. She grew up in a close-knit Greek-Australian family, raised by her parents Anna and Jim Itsines. From a young age, Kayla was deeply involved in sports, particularly basketball, which helped her develop both a love for fitness and a competitive spirit. She attended school in Adelaide and later decided to pursue a career in health and fitness, a choice that would eventually make her one of the most influential fitness figures in the world.
Her upbringing played a huge role in her work ethic. Coming from a family that valued discipline and consistency, Kayla embraced an active lifestyle early on. By the time she was in her teenage years, she had already made up her mind to follow a career in personal training and fitness.
Kayla Itsines – Education and Career Start
Kayla became a certified personal trainer in 2008 after completing her training with the Australian Institute of Fitness. She started her career by working at a women’s gym in Adelaide. During her time as a trainer, she noticed that many women came to her with similar goals: they wanted to tone their bodies, lose weight, and feel healthier without necessarily becoming bulky.
She began designing short, effective workouts that women could do with minimal equipment, focusing on strength, endurance, and functional fitness. These early training sessions would later become the foundation for her world-famous Bikini Body Guides (BBG).
Her early success as a trainer came from word of mouth. Clients began seeing results quickly, and Kayla realized she had developed a workout system that could be applied to women everywhere, not just in her local gym.
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| Image Source: endorsco.agency |
Kayla Itsines – Rise to Fame with Bikini Body Guides
In 2014, Kayla released her first Bikini Body Training Guide, a downloadable PDF program that included a 12-week training plan. The guide was simple, clear, and targeted toward women who wanted effective results without long hours in the gym. The BBG workout style featured 28-minute high-intensity sessions that quickly gained popularity around the world.
Soon after, she released multiple follow-up guides, including Bikini Body Guide 2.0, Healthy Eating and Lifestyle Plans (HELP), and recipe guides. The BBG community rapidly grew, as women from across the globe began posting before-and-after photos of their transformations using Kayla’s methods.
By 2015 and 2016, Kayla had become a household name in fitness. Her Instagram account exploded, gaining millions of followers, and her BBG guides were among the most downloaded fitness e-books in the world.
Kayla Itsines – Sweat App
In 2015, Kayla and her then-partner Tobi Pearce co-founded the Sweat app, initially branded as “Sweat with Kayla.” The app included structured workout programs, nutrition plans, and progress-tracking tools. It quickly became one of the most successful fitness apps in the industry.
By 2016, Sweat was generating more revenue than any other fitness app worldwide. In 2021, the company was sold to iFIT for a reported $400 million, highlighting just how influential Kayla and her brand had become. In 2023, Kayla and Tobi bought back the company, putting Sweat once again under their leadership.
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| Image Source: sweat.com |
Today, the Sweat app features multiple trainers, but Kayla remains the face of the brand. Millions of women use the app to train every day, making it one of the largest digital fitness platforms in the world.
Kayla Itsines – Books
Kayla has authored several books, extending her influence beyond the digital sphere. Her books include:
- The Bikini Body 28-Day Healthy Eating & Lifestyle Guide (2016)
- Bikini Body Training Guide 2.0 (2014)
- The Bikini Body Motivation & Habits Guide (2017)
- Foam Rolling Guide (2015)
- Bikini Body Help Healthy Eating and Lifestyle Plan (2017)
- Healthy Eating and Lifestyle Plan for Vegetarians (2017)
Her books provide both workout instructions and nutrition tips, helping readers adopt a balanced lifestyle. They remain bestsellers in the fitness and health category, available globally in multiple languages.
Kayla Itsines – Personal Life
Kayla Itsines’ personal life has often been in the spotlight due to her relationships and family. She was previously in a long-term relationship with Tobi Pearce, with whom she shares a daughter, Arna. The couple co-founded Sweat and became one of the most powerful pairs in the fitness industry. However, they announced their split in 2020.
In 2023, Kayla married Jae Woodroffe, and together they welcomed their second child. Her journey as a mother is often shared on her social media platforms, where she emphasizes the importance of balancing fitness with family life. She is also very close to her sister, Leah Itsines, who is a nutritionist and recipe creator.
Kayla Itsines – Height, Age, and Kids
Kayla is currently 34 years old. She was born on May 21, 1991. Her height is 1.65 m (5 ft 5 in). She has two children and often shares glimpses of her motherhood journey with her millions of followers online.
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| Image Source: https://womenshealth.com.au/ |
Kayla Itsines – Net Worth
Kayla Itsines’ net worth is estimated to be over $150 million, making her one of the wealthiest fitness influencers in the world. Her income comes from book sales, the Sweat app, brand endorsements, and her personal brand. She is consistently listed among the most successful health influencers globally.
Kayla Itsines – Media Presence and Popularity
Kayla has been featured in top media outlets like Vogue, Women’s Health, Forbes, Business Insider, TechCrunch, and more. She has appeared on television, podcasts, and international interviews, where she speaks about fitness, entrepreneurship, and empowering women to feel strong and confident.
Her Instagram, with over 16 million followers, is one of the largest fitness accounts in the world. She regularly shares workout tips, motivational posts, personal updates, and transformations from her community. Her YouTube channel also features instructional fitness videos that have millions of views.
Kayla Itsines – Controversies and Criticism
Like many fitness influencers, Kayla has faced criticism, especially about the intensity of her programs. Some critics argue that her workouts are too challenging for beginners, while others question the sustainability of quick transformations. However, Kayla has addressed these concerns by continuously updating her guides and offering modified workouts for different fitness levels.
Her split from Tobi Pearce also attracted media attention, but the two have remained professional, especially when it comes to their shared business ventures.
Kayla Itsines – Legacy and Influence
Kayla Itsines is widely regarded as a pioneer in digital fitness. Before her rise, most fitness trainers relied on DVDs or in-person classes, but Kayla showed how social media and mobile apps could transform the industry. She built an empire by focusing on accessibility, simplicity, and results-driven programs that appealed to women worldwide.
Her influence extends beyond fitness—she has created a supportive global community where women share their fitness journeys, inspire each other, and feel empowered.
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| Image Source: womenshealthmag.com |
Kayla Itsines FAQs
Why did Tobi Pearce and Kayla split?
Kayla and Tobi Pearce split in 2020 after being together for many years. They share a daughter and continue to co-parent while also collaborating in business.
What happened to Kayla Itsines?
Kayla continues to lead Sweat, release new workout programs, and inspire millions worldwide. She married Jae Woodroffe in 2023 and welcomed her second child, balancing motherhood with her global fitness career.
How rich is Kayla Itsines?
Her net worth is estimated to be over $150 million, largely due to her app Sweat, book sales, and endorsements.
Are Kayla and Tobi still business partners?
Yes, despite their personal split, Kayla and Tobi remain business partners and are involved in running Sweat after buying it back from iFIT.
How tall is Kayla Itsines?
Kayla is 1.65 m (5 ft 5 in) tall.
Does Kayla Itsines have kids?
Yes, she has two children: her first daughter with Tobi Pearce and her second child with her husband Jae Woodroffe.
Conclusion
Kayla Itsines has evolved from a local Adelaide personal trainer to one of the most successful fitness entrepreneurs in the world. Through her Bikini Body Guides, Sweat app, books, and social media presence, she has transformed how women view fitness. Today, she continues to balance her role as a wife, mother, entrepreneur, and trainer while empowering millions of women globally to achieve healthier lifestyles.
Her journey is proof that passion, discipline, and vision can create not just a business empire, but also a lasting legacy in the fitness world.
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