Kayla Itsines

Itsines traces her interest in fitness to playing basketball and other sports[11]. She recalls being initially intimidated and overwhelmed by the gym, until a personal trainer encouraged her to "just start somewhere".[12] Finding that she enjoyed how the workouts made her feel, she abandoned her original plans to become a beauty therapist[13] graduating from the Australian Institute of Fitness at the age of 18[5] as a Master Trainer.[14] As of 2018 her wealth is observed as $63 million.[15]

After graduation, Itsines found work at a women's gym in Adelaide.[5] She soon observed that the machine-based classes she was leading there did not help her clients achieve their goals.[5][16] One day, she led the class through a routine of aerobic exercises instead of using the machines, and saw that they loved it.[5] Itsines came to believe that most women seek three specific outcomes from training: smaller inner thighs, flatter abdomens, and more toned arms,[16] while also being concerned about becoming too bulky.[17]

She also started training her sister's friends who wanted to improve their fitness so they could play Netball on their high school team,[5][8] focusing on building core strength and powerful legs.[5] She lectured them on nutrition, and asked them to take before-and-after photos of themselves to track their progress.[5] Itsines' 12-year-old cousin suggested using Instagram as a way of organising the photos.[5][8] Within a few months, Itsines has gained hundreds of thousands of followers and was receiving regular requests for advice and help. Her partner, Tobi Pearce, suggested that she compile her routines into ebooks that could be sold online.[5] In March 2013, they founded the Bikini Body Training company with Itsines as director and Pearce as CEO.[5] The following January, they published the first two Bikini Body Guides, with Itsines' workouts in one volume, and nutrition information from dietitians Julie Dundon and Anne Schneyder of Nutrition Professionals Australia in another.[5] Itsines would later offer the guides via an affiliate program as well.[5] By October, the guides had been downloaded over one million times.[18]

The BBG program is based on 28-minute high-intensity workouts to be completed three times per week.[18] The workouts are built from a repertoire of 150 movements inspired by a variety of sports and other physical training.[18] The meal plans originally provided as little as 1,200 calories per day, but were updated to provide 1,600 to 1,800.[5] She describes the overall strategy as not being aimed at either weight loss or muscle gain, but rather, the creation of a particular look.[13] The program is aimed primarily at women because Itsines feels she particularly understands women's health and fitness goals.[7] In another interview, she added "That's why when I released the app, I called it Sweat With Kayla."[5]

In 2015, she embarked on a world tour, the "Kayla Itsines Bootcamp World Tour", leading free group fitness classes.[5][16] The tour included Australia's capital cities,[19] New York City, Los Angeles, and London.[5]

In February 2015,[20] Itsines took legal action against another Adelaide-based personal trainer, Leanne Ratcliffe, and Ratcliffe's partner Harley Johnstone over comments that they had posted on their YouTube channels.[21][22] Ratcliffe, publishing under the pseudonym "Freelee the Banana Girl", had claimed that the BBG eating plan required users to starve themselves, and Johnstone, publishing as "Durianrider", claimed that Pearce used steroids.[21][22] Itsines claimed the statements were defamatory.[20] She obtained an injunction to prevent the further publication of the videos.[22] When the complaint was heard in the Supreme Court of South Australia on 23 March, Judge Withers directed the case proceed to trial, but the matter was eventually settled out of court.[21]

In April 2015, Apple featured Itsines in an advertisement for the Apple Watch, demonstrating the heart-rate monitor feature of the product.[23]

In November 2016, Pan Macmillan published Itsines' first print book, The Bikini Body 28-Day Eating and Lifestyle Guide.[21] In August 2017, she announced the upcoming publication of her second book, The Bikini Body Motivation & Habits Guide, which will be available for purchase in November 2017.[24]

Itsines credits her social media success to keeping the focus on her followers and their fitness journeys rather that on herself and her journey.[16] Part of her social media strategy is to keep attention on the transformation of the body, and she therefore seldom posts photos of her face.[18] She is also careful of how she is represented visually by other publications, turning down photo shoots that she finds inconsistent with her image.[5][21] In a statement of her own values, she says she would never promote something in which she personally does not believe, pose provocatively or sexualise herself, or post advice that is relevant only to her own lifestyle.[7] She is the only person who posts on her social media accounts. [8][21] [25]

She continues to personally train a small number of long-time clients, as well as her staff.[21]

Itsines is the daughter of Anna and Jim Itsines, both teachers.[21] She has one younger sister, Leah, who is a personal trainer and food stylist.[21] Itsines' family heritage is Greek, and she identifies herself as Greek.[8][21] She credits many of her food choices to her Greek upbringing.[19][21]

Itsines met her fiancé, Tobi Pearce, at a gym.[21] They have lived together since 2012.[21] In April 2018, they got engaged.

Itsines gave up drinking alcohol since at least 2012.[17] She gave birth to a girl , Arna, in May 2019.

• Itsines' website