Brook vs Spence Jr: Investigation into Kell Brook’s weight cut back to welterweight

Kell Brook is in the final stages of his most demanding weight cut to date. Sky Sports investigated keto diets, burning calories and cheat meals…

Nutrition expert Greg Marriott, the mastermind behind Brook’s weight cut to defend his IBF belt against Errol Spence Jr live on Sky Sports Box Office next weekend, exclusively explained the secrets of how to beat the scales.

How did the camp start?

Kell came out to Fuerteventura before the 10-week camp to get into a routine. He does two weeks without me so his weight doesn’t look so bad! He weighed 12st 5lbs. His body is just so dense.

After having 10 months out, we always knew he could get back to welterweight – but how long would it take, and how hard would it be?

What was Brook’s diet like?

It’s very personal working with an athlete – you can’t just get a uni degree and give them a textbook diet. You need to make sure he’s feeling good, mentally and physically.

First, we put him on a strictly-controlled keto diet for a couple of weeks which burns fat. Then, at Sheffield Hallam University, we test his blood to see how many carbs he’s using. Then he goes on a low-carbohydrate high-protein diet.

How difficult is it?

It’s all about recovery. I can see when Kell is tired as his carbohydrates drop – you need to realise when that is, because otherwise it might take days to recover. Then training won’t be as good, and he might burn muscle.

What’s on the menu every day?

If he spars in the morning, he’ll wake up at 7am and eat slow-release carbohydrates like a bowl of simple oats. An hour before he spars at 10am he has a fast-release carbohydrate like white bread with jam or honey. That gives him the boost that he needs. After sparring he’ll have a recovery shake.

Two hours later we feed him again – lean beef, or chicken with loads of beef. In the evening he’ll have a low-glycemic carbohydrate like sweet potato with lean fish. Salmon is very calorie dense – you can’t just cut, cut, cut weight. He doesn’t eat rabbit food.

How much discipline is required?

Six weeks out, he knocks on my door saying: ‘I’m hungry!’ It’s intense because I need to mentally satisfy him and keep him satiated, but there is a weight he needs to hit. Three weeks before the fight, he switches on.

Does Brook lift weights in the gym when cutting weight?

Kell is a perfect mesomorph. If he looks at a weight he’ll put muscle on, he finds it easy. In this camp, he’s done circuit training. This camp has been drastically different to the Golovkin fight.

Does he sneak a cheat meal?

Kell is having a cheat meal on Friday, May 19, which he’ll show everyone on Twitter! I promised that if he stuck to the plan, which he has, and if his weight was absolutely perfect he could have a cheat meal.

How long can Brook keep making welterweight?

If he stays at the weight, without going up between fights as he’s adamant that he won’t, he can do it two more times. He’s definitely going to have one more at welterweight. There will be a point when he has to move up, and I believe that will be in the next 18 months.

Kell Brook: I Look Forward To Taking Care of Errol Spence!

IBF welterweight champion Kell Brook (36-1, 25 KOs) is very confident that he will retain his belt when he finally steps in the ring with mandatory challenger Errol Spence (21-0, 18 KOs).

The fight is being targeted for May 27 or June 3 in the champion’s hometown of Sheffield.

The fight will be Brook’s first since suffering his first loss last September at the O2 Arena in London. Brook  moved up by two weight divisions to challenge WBC, WBA, IBF, IBO middleweight champion Gennady Golovkin and suffered a fifth round TKO defeat.

Brook feels Spence is taking a huge step up in class and never faced anyone even close to the A-level of the division.

“I don’t believe he’s fought anyone on my level yet and I’m looking forward to taking care of him in my own backyard. I believe we’ll both bring the best out of each other,” Brook told Nick Parkinson.

“They think he’s going to be the next big star of American boxing but he’s fighting me who’s a world champion who has belief that no man can beat him. It’s a massive step up for him.”

Before the deal was finalized, Brook was being strongly advised by his handlers to drop his IBF title and move up to junior middleweight – where he would be physically more comfortable. Brook, who captured the IBF belt in 2014 with a close points win over Shawn Porter, refused to give up his world title.

“People around me advised me to move up but I’m a stubborn man. It took me a long time to win that world title belt and I’m not going to just give it up,” Brook said.

“It’s going to be a struggle to get down to welterweight limit and I will find it hard but I’m too stubborn just to give it up and there are some big fights out there at welterweight.” – See more at:–114321#sthash.XUZcVKZA.dpuf