The 25-year-old is set to face Floyd Mayweather in a super fight on February 20 and will need to be at peak fitness levels.
He will have the clear height and weight advantage over 'Money', with the weight being down to a rigorous training programme.
Before fighting fellow YouTuber KSI, he explained that he was drinking cow's blood and eating up to 80lbs of food every day
"They're making a machine out of me," he told Business Insider.
"I'm eating 80lbs a day. I'm drinking the blood of cows and I'm pushing a lot of weights up in the air and putting them down."
Paul's younger brother Jake also boxes and recently defeated former NBA point guard Nate Robinson.
The duo trained with Shannon Briggs and he was very impressed with their technique.
When asked about Logan, he replied: "This kid could be heavyweight champion of the world in four or five years, facts."
Rogan discussed the pair on the latest episode of the Joe Rogan Experience and said: Dude, he's [Jake] good. So is his brother [Logan]. We played a video of his brother wrestling Paulo Costa, his brother is f***ing legit.
"He's a legit athlete. He wrestled in college.
"You've gotta give credit where credit is due. I know those guys like to troll. But Jake and his brother are legitimate tough guys, they're tough."
Paul is aware of the challenge 50-0 Mayweather will offer and has admitted himself the fight 'makes no f**king sense.'
"None of this is comprehensible. This makes no f**king sense," he told Food Truck Diaries per The Sun.
"My manager, [this] is months ago, comes up to me, he says 'Logan would you fight Floyd Mayweather?'
"I go, 'I mean yes I would, but why are you asking me that question? Like go do something else, this makes no sense, how is that going to be a thing ever?'
"I think a month later, he approached me with a contract. He said 'If you sign here, you're going to be fighting Floyd Mayweather.'
"I said 'Sure Jeff, I'll sign your fantasy contract. Like f*** you, why would this ever happen?'
"I signed it, and then after just months and months of going back and forth and figuring out dates, we had three different dates, and how to announce it, and just like the strategy behind it.
"It finally came to fruition, and this event that supersedes everything I've ever done in my life, is finally solidified."
Featured Image Credit: Logan Paul/Instagram
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