Tiffiny Hall Australian television personality, author, expert trainer and founder of fitness and wellness online program TIFFXO, Tiffiny Hall all is one of the highest qualified female martial artists in the world for her age (sixth Dan Black Belt Master). She is known for her appearance on Network 10s program The Living Room, was the an expert trainer on hit television show The Biggest Loser and was nominated Most Popular New Female Talent at the Australian TV Week Logie Awards. She is a qualified personal trainer with a Diploma of Sport Coaching, specialising in martial arts. Tiff is passionate about creative writing and has published four novels with her next Young Adult novel set for release soon. She has written four health books and a cookbook.