The Guinness Book of Records holds its breath underwater.

20 17 On February 28th, Spanish bull Aleix Segura held his breath underwater for 24 minutes and 3 seconds, breaking the previous record. Become the new Guinness World Record holder.

Before that, it was recorded by Stig in Denmark.

Sevelinseni kept it for 20 10 years. He jumped into a pool full of sharks and held his breath for 20 minutes 10 second.

Stig

Severinseni then deliberately adjusted the water temperature of the swimming pool in order to better preserve oxygen. He controlled his heart rate to only 30 beats per minute, and finally he broke his own record and successfully held his breath for 22 minutes and 22 seconds.

Extended data:

The adverse effects of holding your breath mainly include:

First, holding one's breath leads to the increase of internal pressure in the thoracic cavity, which leads to the obstruction of venous blood return to the heart, and then the heart is not fully filled, the output drops sharply, and the blood pressure drops sharply, which leads to insufficient blood supply to the myocardium, brain cells and retina, dizziness, nausea, tinnitus, black eyes and other phenomena, which affect and interfere with the normal exercise;

Second, at the end of breath-holding, there will be a reflective deep breath, which will lead to a sharp drop in pleural pressure. The blood originally trapped in the vein will quickly return to the heart, impact the myocardium, make it overstretched, and the blood pressure will also rise sharply. This is easy for children with low endurance to overstretch and relax the myocardium. For the elderly, because of its poor blood vessel elasticity and brittleness, it is easy to damage the blood vessels of the heart, brain and eyes, which will have serious adverse consequences.

References:

Baidu encyclopedia-hold your breath