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But those things you mention generally affect speed, timing, and coordination much more than your knowledge. Thus in competitive sports they must be much more important than they are in poker. However, keep in mind that if you don't sleep for a few days (or some very long length of time) you won't be able to do much of anything well.
poker is largely - if not purely - about decision making though. and tiredness - even mild tiredness - has been proven to adversely affect decision making. same for poor concentration, focus, diet and health.
its not just decsion making that can be affected, but discipline. you can make choices that you know, rationally, are bad for you under these conditions.
all decisions in poker rely on information. i play some hands in radically different ways depending on available information. being intently focused on one table / task absouutely will impact on your ability to spot information on another - its why winrates drop with increased tables.
i alluded to this earlier in the thread:
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Poker does require attention, and short term memory slots.
Especially online poker.
You will be keeping track of players relative position, tendencies and actions. You will have to assess ranges how they connect with flops and how they will respond to bets. Even visualising your own range in spots is something that can take up all your available focus.
Tiredness, emotional spikes and even low glucose levels are all proven to impact negatively on attention, memory and decision making.
Poker is to big a beast for the correct play to be stored and easily applied. You will play hands differently when tired and unable to be fully focused on all tables or when your glucose levels are low and your decision making is impacted.
For example when completing a complex mental task you are less likely to show self control / discipline. This has been shown in many studies. It comes up in the real world where you will be less likely to resist an unhealthy urge for chocolate when focusing on a complex mental task than when doing something mundane such as chatting to a friend. In poker trying to assess how a particular villains check v limp range hits an J65ss flop on one table and assessing whether a hand blocks too many missed draws to bluff the river on another whilst tired and sugar crashing can very well lead you to make an undisciplined float on another table.
Increasing health, focus and diet can demonstrably improve decision making on and off the poker table.
if you disagree that attention to detail, mental processing power, decision making, memory, discipline are impacted by things like tiredness, health, diet, focus etc etc then you are going against a body of published, peer reviewed and academically sound work. i can forward some of that research to you if you like. an inquisitive mind like yours would no doubt find it interesting.
if you disagree that attention to detail, mental processing power, decsion making, memory, discipline etc etc are crucial to making sound decisions when playing poker well i dont know where to start.
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GTO players shouldn’t need to concentrate much at all.
this quote is baffling to me.
the application of gto concepts is incredibly difficult to implement. you simply are not going to remember the game tree of even a simple turn + river decision. once you start having to dissect ranges, appropriate mixing ratios, multiple bet-sizes whilst trying to remember similar solutions you have worked on, very quickly you are going to run into issues with concentration. especially if you have multiple tables on the go.