A 6-year AFL footballer, Bunn was recruited from East Doncaster, Victoria, and captained the Fitzroy U19s before playing seniors for the Fitzroy Football Club between 1990 and 1992. He made 30 appearances, coming runner-up to Scott Clayton in the 1990 best and fairest (his debut season) having played just 17 games. After two further injury-affected seasons, he was drafted by the Hawthorn Football Club in 1993. He played 23 senior games, including one final, and won another two reserve best and fairests (he won one at Fitzroy also). He mainly played through the midfield and as a backman.
In the 1990s, Bunn completed an Honours degree in Exercise Physiology and formal training in Maharishi Ayurveda.
Bunn's popularity as a leading natural health presenter and coach (he's known as 'the Natural Health Guy') has been built on his unique blend of the latest modern science, ancient, eastern wisdoms of health and the secrtes of the world's healthiest and longest-living people. In 2010, Bunn published his first book, Ancient Wisdom for Modern Health—Book One: The Essential Wisdoms—"the simple, timeless secrets of health and happiness", and was a featured expert in the International Best-Seller, 'Health & Wellbeing Millionaire'. Ancient Wisdom for Modern Health has become a three-times best-seller in Australia, was taken up and published by Macmillan in five countries of the Indian sub-continent, and was recently released in the USA and Europe. Bunn donates ten percent of the profit from the 2013 edition of the book to the David Lynch Foundation. He plans to release two more books as part of his "Ancient Wisdom for Modern Health" series.
Currently Bunn is a prominent and highly popular guest speaker at conferences and large events throughout Australasia and increasingly the USA. His topics cover Ayurveda, natural health, work-life balance, personal performance, motivation, consciousness and spirituality. He is also a certified teacher of Transcendental Meditation (TM) and teaches this to corporates and prominent businesspeople.