Kayla Itsines Bio

(Australian Personal Trainer Who Creator a Series of Fitness ebooks Titled ‘Bikini Body Guides’)

Birthday: May 21, 1991 (Gemini)

Born In: Adelaide, Australia

Kayla Itsines is an Australian personal trainer, entrepreneur, and author. She is world-famous for her fitness ebook series, ‘Bikini Body Guides’, and her nutrition planning and workout app called ‘Sweat with Kayla’, which overshadowed all other fitness apps in revenue generation in 2016. Since 2008, she has been working as a personal trainer and has guided thousands of women to improve their health and fitness with her own exercises, which she developed after much research. She founded the Bikini Body Training company with her then-boyfriend Tobi Pearce. The young fitness guru is also a YouTube star and a popular social media personality. She has 28 million followers on Facebook and 15.7 million followers on Instagram. In 2016, Time magazine named her as one of the 30 most influential people on the Internet.

Quick Facts

Australian Celebrities Born In May

Age: 33 Years, 33 Year Old Females


father: Jim Itsines

mother: Anna Itsines

siblings: Leah Itsines

Partner: Tobi Pearce (2013–)

Born Country: Australia

Height: 5'5" (165 cm), 5'5" Females

City: Adelaide, Australia


Kayla Itsines began her career working at a women's gym in Adelaide. Soon she realized that her clients were not achieving their fitness goals by performing exercises on the machines and equipment. As an experiment, she gave them an aerobic exercise class one day and found that her clients loved it.

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When she found that her clients were more interested in working out at home but had space constraints for machines and equipment, she designed exercises with minimal equipment which required less space. She personally trained her sister's friends who wanted to play netball at their high school. She also advised them on nutrition.

In March 2013, she, along with her then-boyfriend Tobi Pearce, founded the Bikini Body Training Company with Kayla serving as the director and Tobi as the CEO. Acting on Tobi’s suggestion, she published the first two ‘Bikini Body Guides’ in January 2014. By October 2014, more than a million guides had been downloaded. In 2015, she did a world tour called ‘Kayla Itsines Bootcamp World Tour,’ and gave free group fitness classes. In the same year, she did an advertisement for the Apple Watch, which demonstrated the heart-rate monitoring feature of the watch.

In November 2015, she launched the Sweat with Kayla app. Initially, she was criticized by the customers who felt that the app was costly. They felt that since they had already paid for the Bikini Body Guides ebooks, they should be getting the app at a discounted price. In response, Kayla reduced the price of the app to $1 for the first month, only for the customers who had already bought the ebooks.

In 2016, her first print book, ‘The Bikini Body 28-Day Eating and Lifestyle Guide’ was published, and in 2017, her second print book, ‘The Bikini Body Motivation & Habits Guide’ was released.

Kayla launched her self-titled Youtube channel in November 2012. However, she released her first video “Kayla Itsines HIT 107.1 Bootcamp #1 Adelaide!” in February 2015. She mostly posts fitness-related content on her channel which has earned her over 414k subscribers.

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Personal Life

Kayla Itsines was born on May 21, 1991, in Adelaide, Australia, to teacher parents Anna and Jim Itsines. She is of Greek descent. Her younger sister Leah is also a personal trainer and food stylist. As a child, Kayla loved playing basketball and other sports, but she was underweight and sickly.

When she was 15, doctors told her that she might suffer from fertility problems in the future as she had endometriosis. She read on the internet that if she became fit and healthy, she would be able to preserve her fertility. Hence, she started working out at the gym. After getting positive results, she decided to become a personal trainer. At the age of 18, she graduated from the Australian Institute of Fitness.

Kayla met aspiring personal trainer Tobi Pearce at a gym. At that time, he was also studying law and commerce. He owned a boot camp business and had already started training clients. Kayla and Tobi then began dating. They got engaged in 2018 and later welcomed a daughter named Arna Leia Pearce. However, the couple later announced their separation in 2020. In 2022, she got engaged to Jae Woodroffe. The couple announced the birth of their son, Jax, in 2023.

She gave up drinking alcohol in 2011 after her aunt died due to alcohol poisoning. She believes that anybody who pursues a healthy lifestyle should not consume alcohol.

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