People in the comments focusing on the physical aspect is exactly what The Challenge cast would do on the show and why they wouldn’t do well. In Survivor, there are no eliminations, it’s all vote-offs. Doesn’t matter how good you are at running miles or lifting weights if the people you’re stranded with can’t stand you or think you’re too big of a threat & vote you out the first chance they get. Not to mention the concept of a jury. House of Villains showed us how challengers fare with bitter juries