He captioned a snap of himself while on the obstacle course and announced: "Getting excited for this to drop!"
"Whilst rehabbing off the back of bicep surgery last year I thought... why not put myself thru one of the toughest obstacle courses in the world... 😜," he continued.
The star also admitted that workign on this project pushed him harder to recover after experiencing a physical injury in the past.
"Having a goal actually made me super diligent and focussed and positive about my recovery... but did I fall on the first obstacle 😳😳@ninjawarriorau#NinjaWarriorAU 👖@aldiaustralia#therobardsmethod," he shared.
Tim may be recovering, but we're certain with a physique like featured in the snap below, he's got a good shot at winning this!