Difficulty concentrating. Short-term memory issues. Mental fatigue. Confusion and lack of clarity. Slower thinking processes. Exhausted yet anxious at the end of the day.
It reads like a list of prescription drug side effects, but this is your every day.
This is what brain fog feels like.
Brain fog has been attributed to improper diet, lack of sleep, and overall stress.
In today's digital world, many argue it's more directly related to excessive screen time.
But not all screen time is created equal. The writer who types undistracted for 3 hours straight on her laptop isn't inducing brain fog.
The knowledge worker who spends an hour constantly switching from app to app is.
Screens aren’t the problem. Context-switching is.
Context-switching is what most knowledge workers now call ‘work’.
It's what I did for years. I’d start my workday checking email: opening, responding, and archiving rapidly. I then jump to Slack, checking DMs and various relevant channels. Now I’m in my task manager figuring out what to work on today but I need to see my calendar so I quickly check it and notice a meeting I need to prepare for so I go back to my email to find a document and see a new message so I open it and get stressed out then check my phone out to avoid feelings and see an Instagram notification that I open now I’m scrolling until a colleague pins me with an urgent request and I’m on a call discussing that.
This cycle would get repeated all day. I rarely focused on one task for more than a few minutes.
Context-switching results in:
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Increased Mental Effort: Each switch between tasks requires the brain to adjust and reorient, increasing cognitive load.
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Mental Fatigue: The more frequently you switch, the quicker your brain tires, leading to reduced overall productivity.
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Fragmented Attention: Continuously switching tasks fragments your attention, making it difficult to maintain deep focus on any one task.
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Stress and Anxiety: The constant need to reorient causes stress and anxiety, especially if tasks are left incomplete or deadlines are approaching.