44, has already impressed  viewers with his positive attitude. While many royal fans are excited to see what the rugby player will get up to in the jungle, Mike has shared the one thing his wife, 41, is worried about.

Princess Anne’s daughter Zara has warned Mike not to embarrass her with his eating habits. Speaking from Australia, Mike said: “We have some work out here so if it got to the end then hopefully, she’d be able to come out.

“Zara told me to go and be myself, which is all you can be. She said to go enjoy and be yourself.” Mike and Zara, the late Queen’s granddaughter, have been married since 2011 and share three children, Mia, eight, Lena, four, and one-year-old Lucas.

He added: “Zara’s biggest worry is how loud I am when I eat. She will be very happy if someone comments about how loud I breathe when I eat because it’s always a point that she brings up. 

“When your nose has been mangled as much as mine it is just a by-product.”

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Of getting his wife’s blessing to appear on the show, Mike said: “Zara gets it and supports it – with both our careers, she goes away competing for weeks at a time and I always went on tours for three, four weeks in the summer, so our relationship has always been built to deal with that and we’re good at compartmentalising and finding ways to deal with it.”

Nick Jones is a brand ambassador for Core Balance and a personal trainer. He spoke exclusively to Express.co.uk about Mike’s diet which he follows normally at home, that is reportedly “high in calories”.

He said: “I would say Mike would have to watch his diet more because he’s a retired rugby player as his diet would’ve been high in calories for when he was a full-time athlete.

“Like with everybody else it’s keeping the diet balanced and working it alongside training, being a retired player he’d have to make sure the diet and meals are all balanced with the amount of training he does.

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What exercise routine is best for Mike when staying in the UK?

Sophie opined: “Dependant upon Mike’s choice of training, he could get it into his routine before his day starts with his family or include them in parts of his exercise so everyone is staying fit and healthy together. Routine is key to reducing stress and being able to do everything you want to do in your day and keeping fit which again is so important for both mental and physical health.

“For example; Mike could strength train two to three days a week, go on a family bike ride or walk and use the other days to help with recovery such as a swim or try something new with the family like Go Ape or an obstacle event.

“Fitness and routines should be fun and enjoyed so this is the most important thing and a nice way is sharing this with friends and family so everyone can be healthy.

“For retired athletes like Mike, sport is such a big part of their life so transitions can be hard mentally and physically but also this allows opportunities to try new sports or activities they may love as well as meeting new like-minded people.”

Source: Daily Express | Diet