A completely new take on the celebrity challenge show launches tonight with Freeze the Fear, which harnesses the cold therapy super powers of Wim "The Iceman" Hof.
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Find out when the series starts, who's taking part, and who Wim Hof is right here.
When is Freeze the Fear with Wim Hof on TV?
Freeze the Fear begins tonight (Tuesday) at 9pm on BBC One.
Who is Wim Hof?
The Dutch cryotherapy enthusiast has harnessed the powers of ice cold water and special breathing techniques to create an incredible way of controlling nerves and pushing physical boundaries.
Known as The Iceman, his celebrity followers include the likes of Oprah Winfrey, Justin Bieber and Matt Damon, who have all been won over by his 46 years of experience in using the cold to his advantage.
Hof is known for his inspiring social media posts and amazing YouTube videos, with his own achievements including climbing Mount Kilimanjaro in shorts, running a half marathon above the Arctic Circle barefoot, and standing in a container while covered with ice cubes for more than 112 minutes.
He has learned to control his breathing, heart rate and blood circulation and to withstand extreme temperatures, and claims that it's perfectly possible for all of us to learn to do the same.
While his own love of cold water began after a winter swim aged 17, he told how the tragedy of losing his wife Olaya in 1995, who had been battling depression, and being left to bring up their four children really kickstarted his use of cryotherapy.
He said: "The children made me survive but it was the cold that brought me back to life. It healed me. Instead of being guided by my broken emotions, the cold water led me to stillness and gave my broken heart a chance to rest, restore, rehabilitate.
"That is the message I want to share. This is what I found. I want to share the love. I don’t want anyone else to be in the same stressful situation that I was left behind in."
Which celebrities are taking part in Freeze the Fear with Wim Hof?
The celebrity recruits who've committed to Hof's way of life are French footballer Patrice Evra, sports reporter Gabby Logan, singer Alfie Boe, ex-EastEnders actor Tamzin Outhwaite, weatherman Owain Wyn Evans, Strictly Come Dancing pro Dianne Buswell, rapper Professor Green, and footballer and singer Chelcee Grimes.
Professor Green said: "I took part because my mental health has not been at its best. I hit quite a low point last year and I just really wanted to reboot and get my energy back.
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"I knew that the cold-water swimming was perfect for that as it’s something I’ve used intermittently. I understand the benefits of cryotherapy but I wanted to do it properly - as it's supposed to be done."
Buswell, who grew up in Australia, said it was the first time she had experienced such cold temperatures: "When I was growing up, going to a cold place wasn’t really an option because it was so far away from us. I’ve only seen snow in the last few years; this was so, so different from anything I’m used to."
And Boe said of his admiration for Hof: "I keep in touch with him, send him pictures and messages and we talk regularly. First and foremost I just wanted to be his friend. Having people like that in your life is the positive kind of energy you need."
What happens in Freeze the Fear with Wim Hof?
The series sees the celebrities move into a camp of tents in the stunning, snowy landscape of the Italian mountains.
No one is knocked out of the show as it's not a competition with a winner, but the celebs are pushed beyond their comfort zones as Hof coaches them through a number of freezing challenges.
Viewers will see them swim under ice, do yoga at perilous heights, submerge themselves in ice baths and abseil down a mountain face, as well as taking on entry-level activities like breathing techniques and cold showers.
Outhwaite admitted: "If I had to do it all again now, knowing what I know, I don't know if I would. But in a way, it also changed the way I think about lots of things."
Who are the show's presenters?
This Morning star Holly Willoughby, who admits to being one of Hof's famous fans, hosts the show alongside comedian Lee Mack.
Willoughby said of her own adventures in cold water therapy: "I’ve dipped in and out of it really. It’s not something I’ve done religiously. I do find the cold shower thing really hard. I have done it, but I don’t like it although I do feel better afterwards which makes it really annoying that I can’t commit to it.
"If I go away on holiday or something, I’m like ‘right I’m going to go and do it then’. I find it much easier if it’s the summer or if it’s sunny, but Wim would tell me off for that because you can’t be a fair-weather Wim Hoffer."
Mack said of meeting Hof: "Put it this way, I’ve worked with Patrice Evra before, who is known as the crazy man of football, and even he found Wim a bit crazy!"
He added: "I made it very clear from the outset that ‘Yes I would love to present this show but there are a few things you need to know, I am doing nothing, and when I say nothing I don’t mean a little but none of this.’"
There will also be a spin-off show, Munya and Filly Get Chilly, which sees presenters Munya Chawawa and Yung Filly take on some of the ice challenges and meet the contestants.
Freeze the Fear with Wim Hof begins tonight (Tuesday) at 9pm on BBC One.
Watch: Holly Willoughby admits she was 'in tears' over Freeze the Fear