> But if someone is showing up with "brain fog" and underperforming while feeling skilled, that really sounds like something else is up. One of the things that

> But if someone is showing up with "brain fog" and underperforming while feeling skilled, that really sounds like something else is up. One of the things that sustained stimulant abuse contributes to is sleep deprivation and the disturbance of sleep patterns. "Brain fog" - confusion, problems concentrating, memory problems, are all symptoms of sleep deprivation. Sleep deprivation experiments have also consistently produced psychotic symptoms (hallucinations, paranoia, disturbed/unusual thinking - the person undergoing the psychosis of course thinks they are doing fine) - the earliest experiment I am aware of being Randy Gardner's[1] in 1964. "Stimulant psychosis" is supposed to be one of the effects of amphetamine abuse; I think the psychosis is likely due to the sleep deprivation involved in multi-day binges. [1] https://en.wikipedia.org/wiki/Randy_Gardner_(record_holder) https://en.wikipedia.org/wiki/Randy_Gardner_(record_holder)