Tiffiny Hall in 2015. (Photo / Getty)

Personal trainer Tiffiny Hall is one of the best-known fitness writers in Australia.

After breaking out on The Biggest Loser, Hall has written multiple books about weight loss and exercise, and has become a social media superstar.

Now she is expanding into kids books. Hall and her husband, comedian Ed Kavalee, have written A First Time for Everything about their first year as parents.

Hall joined Andrew Dickens to discuss all things parenting and fitness.