The Westrens won and selected the Challenors to ‘babysit’ a 5kg medicine ball for the week, having to keep it off the ground 24/7 until weigh-in. The penalty for failure was a second ball. Michelle took Joe to task for his reaction to the Reds being chosen. The Commado put the Moons through another taste of training torture, and the sand bag Challenge was revealed - the first family to load a tonne onto their scales would win a 1kg advantage at weigh-in, and letters from home.