Kiwi free diver William Trubridge has broken his own free diving record in the Bahamas on Thursday morning, after years of training.
His unassisted free dive of 102m beat his own record by a metre and allowed him to set his 18th world record at 36 years old.
Trubridge told Newshub he's relieved and elated to "get it in the bag this time" after unsuccessfully attempting to break the record in 2014.
He says the training he has undergone since has involved both mind and body.
"I do a lot of training in the pool, yoga, dry training exercises where I'm holding my breath with empty lungs and many many more different exercises," says Trubridge.
"Breath hold is one aspect of it, but you also need to train your technique so you can swim efficiently with the minimum amount of oxygen. Then there's also oxygen - not just body flexibility, but your lungs need to be flexible, mental techniques as well in order to be relaxed and focused."
He says the mind-set he goes in with is key. He tries to rid himself of all rational thought and instead use his subconscious mind. Repetition is harnessed to be able to do this.
"Training your muscle memory - that means you can shut off and your body knows what to do at each stage of the dive."
Timing is crucial - too slow and he'll run out of oxygen, too fast and the oxygen he has won't be used efficiently.
This isn't the furthest he's dived though, as with propulsion assistance from a rope and fins he has gone deeper. But he says those dives didn't mean as much to him.
"I've gone deeper in those disciplines but this is the purest expression of human aquatic potential. It’s the most prized records in free diving and certainly the one that I am most passionate about and train the hardest for."
Now Trubridge is going to take a month-long break before getting back into training for the world free diving championships next year.
"I'm definitely not retiring anytime soon because I'm passionate about trying to push it out some more."
Newshub.
