MARK Wright stunned fans on Monday as he shared an Instagram snap showcasing the extent of his weight loss.
The TV star, 33, revealed he had transformed his physique in just one month after over-indulging on unhealthy food over Christmas.
Mark posted two before and after snaps - which proved just how much his body shape had changed between January 2 and February 2.
However, many fans were left asking exactly how Mark managed to get such a ripped six-pack in the space of just a few weeks.
Here, we take you through the fitness and diet rules Michelle Keegan's husband swears by - which helped blitz his Christmas belly and toned-up.
Mark uses a combination of dieting techniques, however, he certainly doesn't deprive himself from treats...
1. Don't exercise every day
Mark is proof that you don't have to spend hours in the gym every day in order to lose weight.
The presenter revealed he went to the gym around three to four times during the month - particularly so he wasn't spending the whole time exercising while he was in holiday in the Caribbean.
He wrote: "I still wanted plenty of cocktails and to not have to spend EVERY day in the gym.
"I ate reasonably well and went to the gym around three/four times a week.
"January is always a hard time anyway to get straight back in to it after a whole month of Christmas foods and drinks.
"I personally feel it’s too much of a drastic change, so I do what I can."
2. Cut down on indulgent food
Like many of us, Mark piled on weight over Christmas after gorging on lots of festive treats and booze.
In order to shed the pounds he gained, Mark revealed he made sure to cut out the fatty foods he was eating before from his diet.
He said: "December was all about relaxing more, indulging in Christmas food and toning down the regular visits to the gym.
I tried my best to cut down on the indulgent foodsMark Wright
"Through January I tried my best to cut down on the indulgent foods and eat a bit more of what I know works better for me."
Despite this, Mark said he still managed to eat "resonably well".
3. No carbs before marbs
He may have quit Towie nearly ten years ago, but Mark still tries to follow the Towie mantra "no carbs before marbs" when he's trying to lose weight.
By having a high-protein element in your diet and cutting carbs it would have helped Mark feel full despite consuming a lower amount of calories.
Mark even applies this to when he goes to Nandos, telling Coach Magazine: "I’ll go to Nando's and have the chicken and veg but lose the chips – and probably nick a couple off anyone who does order them."
4. Have a cheat meal every now and then
Mark admitted on his social media that he allows himself a cheat meal or takeaway every now and then - adding that he "hates dieting".
In particular, he has opened up about being a fan of a cheeky McDonald's - and often eats a Filet-O-Fish, a cheeseburger and chicken selects in one go.
It's worth noting though that this is very rare for Mark - and slimmers should only be eating meals like this for a very special occassion.
5. Try HIIT
Mark does high intensity workouts in the gym - involving cardio and weight training - to stay in shape.
He shared a video of a HIIT session alongside English pro footballer Josh Wright earlier today.
He wrote on his Instagram that this kind of session is "great for strength and muscle building also great for a calorie burn."
During the clip, Josh and Mark can be seeing doing a variety of exercises including press-ups, mountain climbers, upright rows and squat thrusts.
6. Play football
Before Mark shot to fame on Towie and on the 11th series of I'm A Celeb he was a semi-pro footballer with a youth career at West Ham United, Arsenal and Tottneham Hotspur.
Mark has continued to play football not just for fun but also to stay in shape.
Most recently, he has been training with a team in West Los Angeles while he has been away in the US.
7. Resist peer pressure
Mark previously claimed that the key to getting fit is resisting peer pressure.
He told The Mirror: "You have to want to do it yourself - you must never want to do it for anybody else.
"If you spend the day not feeling happy or if you don’t feel happy in front of your partner or in the bedroom, why stress when you can have just one hour in the gym?
"It’s not that bad and it’s so important to live life happily rather than doubting yourself."