Youtuber Callum 'Callux' McGinley, 32, created a world record by spending one hour and 26 minutes in the Anechoic Chamber at South Bank University, London, which is said to be the one of the quietest rooms in the world.
With the previous record set in 2019 at 67 minutes, Callux tasked himself with the challenge in order to enter the Guinness World Records.
To complete the task, he had to remain alone in the chamber and remain conscious and awake for the entirety of the challenge.
The 32-year-old was also only allowed to speak for one minute every five minutes, and to keep sound levels below 25 decibels - comparative to the sound of breathing.
After just five minutes, the YouTuber reported feeling disoriented and felt an burst of extreme tinnitus in both ears, quickly followed by a 'pressure in his head' and visions of lights flickering around the room.
At the half-hour mark, Callux said he could even hear his own blood running through his body, after mistaking it for the imaginary sound of the London Underground.
'The sound I thought was the London Underground earlier, that's my blood travelling around my ear.
'It sounds like someone's dragging a trolley across my ear, and now it feels like the seconds are going slower while I'm talking.'
As the world record grew closer, the YouTuber said 'things started getting a bit weird' and he could be seen on camera looking uncomfortable.
At this stage he thought about giving up as he described the hallucinations that brought tears to his eyes.
'I was trying to track this thing I was imagining around the room,' Callux said.
'It was freaking me out and brought tears to my eyes but I knew I only had a few minutes left to beat the world record.
'All I had to do was hang in there for a couple more minutes.'
He described it as the 'hardest five minutes' of the entire challenge and said he felt he was 'going crazy'.
After beating the world record, the 32-year-old could be seen celebrating to the camera in silence, as he committed to staying even longer in the chamber so that 'no one could ever beat' his record.
The chamber's designer, Steven Orfield, said anyone sitting in the room should spend no longer than 45 minutes in it.
'We challenge people to sit in the chamber in the dark. When it's quiet, ears will adapt. The quieter the room, the more things you hear'
'You'll hear your heart beating, sometimes you can hear your lungs, hear your stomach gurgling loudly. In the anechoic chamber, you become the sound.'
The Anechoic Chamber - meaning 'echo-free chamber' - was constructed in the 1990s and is made up of heavy concrete walls and internal surfaces made of 70cm long foam wedges.
Upon entering the chamber, the large, heavy sound-proof doors will close and 'almost complete silence' will occur.
The inner box of the chamber is mounted on springs to avoid the transmission of vibration from London Underground trains which run underneath the chamber and its suspended floor is made from a metal grill.