Makes me wonder if professional divers are statistically more intelligent than average, as they will experience hypoxia as part of the job.
I know part of the SCUBA story is that phenomena like nitrogen narcosis are particularly dangerous because you need your cognitive capacity to survive in the underwater environment.
In the surface world I can go to a party and drink eight beers and maybe throw up and act like a dumbass and embarrass myself and then wake up with a headache the next morning. That level of incapacitation under water would likely be fatal.
https://alchemy.gr/post/429/dealing-with-narcosis-when-freed...
Technically it's not just nitrogen. Most breathable gasses other than helium have some narcotic potential. This includes oxygen, although the magnitude is unclear. Elevated CO2 levels (hypercapnia) can also seriously reduce your cognitive capacity via multiple mechanisms.
https://pmc.ncbi.nlm.nih.gov/articles/PMC7478267/
To offset this problem, world record divers are introducing Hydrogen to their mixtures at extreme depths.
Nitrogen narcosis is another risk of SCUBA diving, but it is not really related to breath holding.
I'd say most professional athletes are less intelligent than average…
> Professionals at anything, let alone an elite performance sport like this, are almost certainly statistically more intelligent than average.
A professional athlete in team based sports, at any given moment, is parsing a ton of data and responsing with quick reflexes and intuition to their changing environment. For example, quarterbacks in the NFL are reading a defense, parsing coverage, and making split second decisions after the play begins to develop.
A soccer goalkeeper is ensuring precise geometry to stay in an optimal position to make a stop, ensuring they are creating a triangle between the ball and the goalposts to optimize their position relative to the possible shooter.
Ontop of all of the in-game aspects, there is intelligence required to train to optimal levels, and hand waving this away as the coaches responsibility is not based in reality. Professional athletes have to stay very mentally focused in their training off the field to achieve their on the field results.
A lot of people judge professional athletes intelligence based on their communications with reporters and on field interviews, but public speaking ability and intelligence are not necessarily correlated. Your smartest engineer is probably not great at making keynote speeches, and likewise would be particularly terrible if they were making them after exerting extreme effort (like athletes do in post game interviews) or while they are pumped with adrenaline with an elevated heart rate (conditions sideline interviews tend to take place in).
All of this is to say, professional athletes arent all meat heads like most computer programmers and bookworms tend to believe. Your judgement that they aren't smart is probably based off of your bias and you are likely overweighting your analysis on a few notable dumb athletes against the crop.
Also, to top it all off, every sport is different, so you can't lump professional athletes into a single bucket.