Formerly known as Steph Fit Mum, she is a trainer and fitness blogger who began fitness modeling in 2013. She has also become a celebrity personal trainer and is known on Instagram as stephaniesanzo where she has more than 1.9 million followers. She also created the BUILD fitness program.
In her youth, she was never interested in exercise. However, after putting on 25 kgs after getting pregnant with her first child, she decided to begin exercising and weight training.
She has a self-titled YouTube channel where she has posted fitness videos and vlogs.
She is the mother of two children, one son and one daughter.
She is part of the Strong Liftwear fitness team alongside Lauren Findley.