Mammalian Diving Reflex

[Jitendra Hydonus]

Why is being underwater so peaceful? See this title on YouTube; Why is being underwater so peaceful? It appears we can get an instant feeling of peace from immersion in water. I have always felt it but did not know why tilll a friend brought it up when I was talking about slowing respiration. This can even be extended to immersion in water under a sink full of water or in the tub. The heart beat automatically slows down.