Talk about being healthy and fit here

https://www.healthline.com/health/holding-your-breath#training
 
> Holding your breath, as well as generally improving breathing and lung function, has useful, potentially lifesaving benefits, including:
 
> increasing life span by preserving the health of stem cells
 
> possible regeneration of new tissue in the brain to preserve brain function (this is theoretical in humans, though; studies have only been done on salamanders)
 
> increasing resistance to bacterial infections
 
> learning how to make yourself feel relaxed