I was just thinking about the challenges and how earlier ones were mainly about endurance, sometimes strength or balance, not really about strategy, certainly none about brains, and the last couple have been all about cardio fitness. Considering there would be a lot of planning involved with the challenges, as the amount of people taking part impacts the order of each one, it is as though the producers knew the final four HMs would be incredibly fit, and that there wouldn't be some poor schlub like Keiran disadvantaged at the final hurdle. Imagine past HMs who've contributed so much with great entertainment value, wit, personality, eccentricity, etc - people like Sarah Marie and Chrissie - competing besides Dan or Chad in physical challenges. They would have been out, despite their worthiness and public popularity. If there must be challenges, why can't they give the audience insight into their characters, like Derren Brown style psychological experiments? Who cares who can pour corn kernels down a funnel!