The line-up for the new series of Celebrity SAS: Who Dares Wins has been announced - and it includes 1Xtra presenter Yasmin Evans.
The Channel 4 show promises to be the "toughest test" in the lives of 12 twelve celebrities.
Among them is Joey Essex, former model Katie Price and YouTuber Jack Maynard.
The show managed to get filming done on the remote island of Raasay off the North West coast of Scotland before the Coronavirus restrictions came in.
Yasmin says the experience was "ridiculously painful, emotional, beautiful, scary, intense, and rewarding" and changed her life.
'No easy options'
"If these celebrities turn up with an ego, they won't last 24 hours," says the show's chief instructor, Ant Middleton.
"There are no short cuts, there are no easy options."
Also taking part are TV presenters Anthea Turner and Helen Skelton, Strictly star Brendan Cole, former footballer John Fashanu, Hollyoaks actress Nikki Sanderson, YouTuber Jack Maynard, Paralympian athlete Lauren Steadman, Rudimental DJ Locksmith and boxing champion Tony Bellew.
Yasmin announced she was taking part on her Instagram account.
View this post on Instagram
#SASWHODARESWINS So, last year I went into the SAS Camp! The most ridiculously painful, emotional, beautiful, scary, intense, rewarding experience that changed a big part of my life. (Sounds dramatic but you will see why) I can’t wait for you to watch the journey that I went on with some of the most phenomenal people that I have ever met. This was incredibly surreal; there are NO WORDS to describe, so you’re going to have to watch! COMING VERY SOON TO #Channel4 @sas_whodareswins @jay_morton @channel4 @ollie.ollerton @Jason_carl_fox @Antmiddleton @Billingham22b
SAS: Who Dares Wins challenges its contestants' physical skills, but former competitor Mark Whistler says the show is as much a challenge on mind as it is the body.
Mark took part in the most recent series of the show and tells Radio 1 Newsbeat the experience is "relentless".
"It's the combination of sleep deprivation and the calorie deficit that you don't get to see when you're watching the finished show," he says.
"That really starts to take an effect and a toll on the physical side."
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When @antmiddleton says go, you GO! 🙃🌊 Backwards diving into @sas_whodareswins with my incredible oppos @elliegregor and Kiersty on Day 1! Taking part in this insane course was honestly one of the most amazing experiences of my life and it’s so cool getting to watch it back! Thank you to everyone for your kind words too! It really means a lot 💖 #thisismydeathdrop #shablam #saswhodareswins #saswdw #saswhodareswins5 #backwardsdive
He says even the most fittest of the celebrity contestants won't be able to prepare for the mental challenge.
'You mentally check out'
"You can be an Olympic athlete, but everything you've done in your training has been entirely in your control," Mark adds.
"You're not getting enough sleep, you're not eating enough and you're used to having control over your own life.
"If your brain switches off for one second and you mentally check out, that's it, it becomes 100 times harder."
He says he's looking forward to seeing how different the celebrities' experience is to his own.
Channel 4 hasn't announced when the show will return, but promises it is coming soon.