SWEAT co-founder and Australian fitness entrepreneur Kayla Itsines. Even if you are mildly interested in fitness you’ve surely heard of Kayla. Her signature workout the Bikini Body Guide (or BBG) has amassed over 30 million followers around the world. What started as a simple downloadable PDF guide to her 28-minute routines has evolved into a multimillion-dollar tech business. Today Kayla and her partner/co-founder Toby are believed to be worth around half a billion dollars. Find out how this humble, down-to-earth, self-confessed homebody took her business from an Adelaide backyard to the top of the tech world as Apple’s largest grossing fitness app.

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