Repeated holding of breath under water, can be dangerous : click the following link to see how dangerous it can be : https://www.swimmingworldmagazine.com/news/shallow-water-blackout-the-silent-killer-of-swimmers/
Repeated holding of breath under water, can be dangerous : click the following link to see how dangerous it can be : https://www.swimmingworldmagazine.com/news/shallow-water-blackout-the-silent-killer-of-swimmers/