Control. The celebrity recruits are submerged in a vehicle underwater, forcing them to control their panic while holding their breath. They also undertake a covert drill, to test their integrity.
The boys meet strongwoman Shayna Wirihana, have a go at kite foiling, feel the burn at a chilli eating competition and hit the grass for lawn mower racing in Eketāhuna.
Tonight, six new celebrities take to the stage to perform songs from the Divinyls, Donna Summer, George Thorogood and the Destroyers, Ray Charles, Ricky Martin and Sara Bareilles.