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After just two hours of sleep - and having just completed a gruelling SAS-style weekend of physical and mental endurance - the tired group are woken-up on the show, ready to start their…
See live streaming from the Shattered studio as the remaining participants have to decide who will face the first endurance challenge of the night.
Dermot presents highlights from the previous 24 hours, and chats to sleep experts, celebrities and the contestants' friends and family.
Someone gets fined for snoozing, and there's action from the head-to-head coin-tossing competition.
One contestant walks after losing £2000 from the fund - for snoozing. Four voluntary insomniacs remain...
Chris, Clare S, Jimmy and Jonathan compete in a reaction test. One of them won't make it to the end of the episode.
The final day finishes with a devious and compelling stand-off. Who can stay awake the longest... with their eyes covered and the lights off?
