Conor McGregor may have been out of the cage for 12 months but that doesn't mean he's been idle.

The former two-weight world champion was last in action against Donald Cerrone last January in a fight which lasted all of 40 seconds.

McGregor was then frustrated in his attempts to secure another fight in 2020 and was sidelined until he agreed a rematch with Dustin Poirier.

The adversaries will renew their rivalry on Sunday morning, more than six years since McGregor took less than two minutes to KO the American.

Here, we take a look at how McGregor has prepared to the sequel by examining his diet and training regimes...

Diet

Conor McGregor employs nutritionist Tristin Kennedy to look after his diet and make sure he is fueled for training - and the fight.

Kennedy learned his trade under the watchful eye of the renowned George Lockhart and first met McGregor outside the Dublin Institute of Technology

They took a photo on that occasion but it was years before they worked together.

Conor McGregor is in fine shape
Conor McGregor is in fine shape

And Kennedy told ESPN: "His diet consists of lean sources of protein: chicken, fish, salmon, beef, eggs. Good complex carbohydrates. Good micro elements; your herbs, basil, oregano. All these things are incorporated into the diet as a whole.

"We have a great balanced diet. From multiple protein sources, multiple carbohydrate sources of wholesome foods. And that's the key.

"I hear people these days, they're focused on one food or two or three foods. The key is to get nutrients from all foods. And that's what we incorporate and that's what we do."

Training

McGregor's wealth allows him to set up training camp wherever in the world he wants.

For his rematch with Poirier, he opted to spend 10 weeks in Portugal before heading back to Ireland for two weeks over Christmas.

He then completed his preparations in Dubai and made the short trip to Fight Island in Abu Dhabi last weekend.

In Portugal, McGregor was training twice a day. In the morning he was put through a skills-based session before a cardio or strength session in the evening.

By last week he had cut his training down to one session a day as he focused on making weight and resting his body.

Since his defeat by Nate Diaz in 2016, McGregor has been developing his own training programme: McGregor Fast.

Along with Dr Julian Dalby and Colin Byrne, McGregor believes he has revolutionised the way martial artists train.

Conor McGregor training in Portugal
Conor McGregor training in Portugal

And Byrne told Mirror Fighting: "His stats are the best they've ever been, that's no word of a lie and the reason for that is consistency.

"After the Cowboy fight he wanted a season of fights but that didn't happen, but he didn't stop training so myself and Julian [Dalby] have been with him all year ready to go. When we got a fight we just ramped it up a bit, but he was always ticking over and building on his last training camp.

"The problem in MMA is that people have a fight, they stop, they do nothing, then they get back in for eight or 12 weeks, get super fit then get super unfit. It's not good for them but it also doesn't lend itself to building on their previous training.

"With Conor, we built on the foundations; people are saying he looks different body-wise, and that's because we've been at it for five years now.

"We haven't trained for an aesthetic, he just looks like that from training because he's training constantly and consistently."