Yes, I learned that from no-equipment divers. With this simple trick people can look around down there with just a mask and fin. They claim with practice the mental effect disappears.
Don’t hyperventilate before diving (or at all, really). It doesn’t oxygenate blood more than ordinary breathing but it does confuse the breathing reflex allowing you to overextend yourself and possibly drown.
For free diving, sure, but the weirdness is in walking around your kitchen (or office, or whatever) for several minutes and not breathing. Especially when you realize that if you want to talk, you need some flow of air in your throat :-/
Yes, I learned that from no-equipment divers. With this simple trick people can look around down there with just a mask and fin. They claim with practice the mental effect disappears.
Don’t hyperventilate before diving (or at all, really). It doesn’t oxygenate blood more than ordinary breathing but it does confuse the breathing reflex allowing you to overextend yourself and possibly drown.
For free diving, sure, but the weirdness is in walking around your kitchen (or office, or whatever) for several minutes and not breathing. Especially when you realize that if you want to talk, you need some flow of air in your throat :-/