in each episode, the eight contestants face off in head-to-head competitions in a single-elimination bracket format. the first round bracket match-ups are chosen at random. the challenges vary in their format, but are generally very physically demanding and often involve physical contact between the two contestants. in addition, all competitions take place outdoors in hot, desert-like conditions, so the contestants are also battling the elements of the weather. austin first explains the challenge to the contestants and to the viewers, then provides verbal encouragement to the contestants and somewhat of a play-by-play analysis of the competition while it is ongoing.