Oleksandr Usyk has revealed he once had to be rescued from a swimming pool when he passed out during an extreme training challenge.
The current generation of Ukrainian boxers are famous for their unique and modern methods.
Many of them were grown in their Olympic team under the guidance of Vasyl Lomachenko’s father, Anatoly Lomachenko.
Both Usyk and Lomachenko Jr won gold at London 2012 together and have since won world titles in professional play.
To do this, they borrowed many methods from Lomachenko Sr which have since been the subject of several pre-fight training camp documentaries.
Ahead of Usyk’s rematch with Anthony Joshua last month, his manager Egis Klimas revealed he watched the champion swim 10km non-stop during his preparations – a challenge AJ has since risen to.
Klimas also said his man could hold his breath underwater for a staggering four minutes and 40 seconds.
Explaining why he does this, Usyk said in an interview on his YouTube channel USYK17: “All these challenges like 10km swimming for example.
“You’re swimming and suddenly you feel such pain in your knee and you think you can’t go, you just can’t go on.
“A muscle is so tight and the pain is just unbearable.
“The pain is in your shoulder, your knee or even the tip of your mustache.
“And you think, ‘Okay, I’m done, better stop and try next time.’
“It means you can’t stop – when you start thinking like that, that’s the signal to keep going.
“You can’t give up. If you give up now, that’s what you’ll do when you fight.
“It’s a breaking point that you will definitely reach during your fight. Every athlete knows what it is.
“Nobody can do anything ‘next time’, so you don’t stop.
“You know I’m a bit crazy and so my coaches watch me carefully. If I pass out, they’ll save me.
“Once, holding my breath underwater, I passed out for a while and was immediately taken out of the pool.”