Mihail Pautov explains why hyperventilating before a cold shower or plunge is dangerous. It reduces oxygen and cuts blood flow to your brain, raising the risk of fainting in cold water. Skip the heavy breathing and head dunking.
I see a lot of techniques that promote hyperventilation. Like 10 minutes before going to the cold shower, cold plunge, like laying down and doing session of like hyperventilation and, and then again hyperventilate and stuff like that. What do you think about this kind.
Of technique when you do hyperventilation, as I said, you decrease the oxygen to the brain. So imagine that you do this 10 minutes, 20 minutes before you go into the cold water. And you have planned this so you know that you have less oxygen in the brain. You go into the water, you will have that activation further from activating your sympathetic nervous system from the cold water. So you have a further decrease of blood flow to the brain.
Yeah.
And you already had a lower blood flow to the brain before because you hyperventilated. So you are actually stepping into a potentially dangerous situation here because you might faint because no blood flow, less oxygen to the brain, then there is a risk of you actually fainting. To say that hyperventilation before going into cold water is not something we recommend because you would have the risk of having too little oxygen to the brain and definitely not hold your breath in the water. And then also donk your head, which I've seen. It's like, why are people doing this? But I think it's because people might not know what is happening in the body. Yeah, but if you don't have any oxygen to the brain and you didn't also dunk the head into the cold water, you, you shock your system and it's dangerous. It's not funny. I'm just laughing because it's. I, I see people do this and I, I try to sell, tell people, don't do this dangerous.