I couldn’t remember my own address.
I was sitting in a doctor’s office, pen in hand, staring at a stack of intake forms. Insurance information. Medical history. Emergency contacts. All simple questions that should have taken five minutes to complete.
But my brain wasn’t working. At all.
“What’s your address?” I’d lived there for years. I had to pull out my phone and look it up.
“List your current medications.” I knew I was taking things, but I couldn’t remember the bottle names. Couldn’t picture them. The information just wasn’t accessible.
“Emergency contact phone number?” My mom had called me that morning asking for my number. I couldn’t tell her then, and I couldn’t write it down now.
I had to say to multiple people: “I don’t know. I can’t remember. I don’t have the answer.”
This wasn’t “feeling a little foggy.” This was complete cognitive dysfunction. And this is coming from someone who got straight A’s his whole life, who was mentally sharp and took pride in that.
If you’re dealing with Chronic Fatigue Syndrome or long COVID, you know exactly what I’m talking about. You walk into a room and forget why you’re there. You read the same sentence five times and can’t process it. You lose your train of thought mid-conversation, and the words just vanish.
It’s like your brain is wrapped in thick cotton. Like trying to think through mud. And it’s one of the most frustrating, isolating, and terrifying symptoms you can experience.
You’ve probably been told to get more sleep. Try brain exercises. Take supplements. Maybe it’s just anxiety.
But here’s the truth: none of that addresses what’s actually causing brain fog in CFS and long COVID.
Because this isn’t about memory loss. This isn’t about focus problems. And it’s not early-onset dementia, even though it might feel like it.
Brain fog isn’t a brain problem at all. It’s a nervous system problem.
And your brain is functioning exactly how it’s designed to it’s just operating in survival mode instead of recovery mode.
After working with hundreds of people dealing with severe brain fog, and spending years in that fog myself where I couldn’t remember my family’s names, I’ve discovered what actually works to restore mental clarity. Not supplements. Not forcing yourself to think harder. Not waiting years for it to magically disappear.
In this guide, I’m going to break down what’s actually happening in your nervous system when you experience brain fog, why traditional solutions keep you stuck, and seven specific science-backed strategies that actually work.
These strategies helped me go from not being able to fill out paperwork to running a business and creating detailed content. And they’ve helped hundreds of clients regain the mental clarity they thought was gone forever.
By the way: If you want to learn about the foundational recovery principles we share on this channel in a condensed format, I’ve created the Recovery Science Blueprint. It breaks down everything you need to know about recovery in a simple, easy-to-read format. I’ll leave a link at the end of this article.
Now, let’s dive in.
The Doctor’s Office Moment: When Brain Fog Became Undeniable
That doctor’s appointment was about a year into dealing with my symptoms, coming off a massive flare-up. I walked into the office because things were getting so bad, so much worse, and I desperately needed help.
The receptionist handed me that stack of paperwork, and I sat down in the waiting room surrounded by people filling out forms like it was nothing. Like it was the easiest thing in the world.
I couldn’t do it.
The nurse called me back. The doctor started asking questions, rapid-fire one after another:
“When did this start?”
“What are your symptoms?”
“Have you tried this medication?”
“What makes it better? What makes it worse?”
I’m trying to answer, but mid-sentence, I’m losing my train of thought. I forget what the questions are. I can see him waiting for me to finish, and I just can’t do it.
It felt humiliating. But more than that, it was scary. Because this wasn’t just “a little foggy.” This was complete dysfunction cognitively.
Then I had to go back to work and explain to my employer what was happening:
“I have this condition. I need accommodations. I might not be able to work full days. My brain doesn’t work the way it used to.”
How do you even explain that to somebody? How do you explain that you can’t think without sounding like you’re making excuses?
I couldn’t watch TV. Couldn’t follow storylines. Couldn’t read the words would blur together. The recall was so bad. Conversations were exhausting because I’d lose track mid-sentence.
And people would say, “I also get foggy when I’m tired.”
This was so much more than just being tired. I felt like I was losing my personality. Losing myself.
What I didn’t understand then what I wish somebody had explained to me in that doctor’s office was this:
Brain fog in CFS and long COVID isn’t random. It’s not the brain deteriorating. It’s not the brain shutting down. It’s the nervous system protecting the brain by shutting down or dialing back non-essential functions.
Once I understood that once I understood the mechanism behind what I was feeling I could actually do something about it.
So if you’re in that fog right now, if you’re sitting in a waiting room or in your own room struggling to fill out forms, if you’re trying to explain this to people who don’t understand, if you feel like you’re losing your mind, I need you to hear this:
Brain fog doesn’t mean your brain is broken. Your nervous system is just stuck in a state that makes cognitive function feel impossible.
Let me show you what’s actually happening and how to fix it.
What’s Actually Causing Brain Fog: The Nervous System Connection
Here’s what most people think brain fog is:
“I must have inflammation in my brain. Maybe it’s a blood flow issue. Maybe I need more oxygen or better nutrients.”
But once you’ve done all your tests and scans, once doctors have ruled out actual brain damage or structural issues, and your brain appears to be functioning “fine” on paper…
Here’s what’s really happening:
Your Brain Is an Energy-Expensive Organ
Your brain uses about 20% of your body’s total energy, even though it’s only 2% of your body weight. It takes massive amounts of energy to run this supercomputer.
When your nervous system is in fight-or-flight mode which it absolutely is when you have CFS or long COVID it’s constantly scanning for threats. It’s on high alert. It’s in complete survival mode.
And when you’re in survival mode, your brain has to make a critical choice:
“Do we use this energy for complex thinking, memory formation, and processing? Or do we conserve that energy for survival functions like digestion, breathing, and keeping the heart beating?”
Your nervous system will choose survival functions. Every. Single. Time.
That becomes the priority. And so cognitive function gets sacrificed.
What Gets Turned Down vs. What Gets Turned Up
What gets DOWN-REGULATED (dialed back):
- Memory formation and recall
- Processing speed
- Executive functioning (planning, organizing, decision-making)
- Verbal fluency
- Attention and focus
- Complex thinking
What gets UP-REGULATED (amplified):
- Threat detection
- Anticipation
- Emotional reactivity
- Fight-or-flight responses
- Autonomic regulation
This is why you can feel anxious, on edge, and hypersensitive (survival functions), but you can’t remember what you ate for breakfast.
Your brain is prioritizing threat detection over memory formation.
When you look at it from that lens, things start to make sense.
Your nervous system is essentially saying: “We don’t have energy for complex thinking right now. We need all available resources for keeping you alive.”
The Vicious Cycle That Deepens the Fog
Here’s where it gets even more complicated.
When you experience brain fog and you start panicking about it when you try to force yourself to be sharper, when you start overthinking it you ask yourself:
- “What’s wrong with me?”
- “Am I losing my mind?”
- “Is this permanent?”
- “Will I ever be sharp again?”
That panic response actually reinforces the survival mode.
It tells your nervous system: “See? There IS a threat. Stay in high alert. Keep cognitive function dialed back.”
So you have:
- Brain fog (the symptom)
- Fear response to the fog
- Even MORE intense brain fog
That’s the loop you get stuck in. And it’s brutal.
The Good News: It’s Reversible
Because this is a nervous system issue and not a structural brain issue, it’s completely reversible.
Think of it like a software issue that needs updating, not a hardware problem that’s permanently broken.
When you shift your nervous system out of survival mode and back into safety mode, cognitive function starts coming back online.
Here’s how to do it.
The 7 Science-Backed Strategies to Overcome Brain Fog
Before I dive into the seven strategies, I need to be crystal clear about something:
You cannot think your way out of brain fog. You cannot force your brain to work better by trying harder.
I tried that approach. At work, in life, I would just push and grind through. I’d sit there trying to read, getting more and more frustrated that I couldn’t focus. I’d force myself to have conversations even though I was completely lost and I couldn’t keep up.
I pushed through the fog thinking that was recovery.
That made everything worse.
Because when you push against brain fog with effort, force, grit, and determination, you’re adding stress to your nervous system, to your overall load. And that stress reinforces survival mode, which only intensifies the fog.
These seven strategies aren’t about forcing anything. They’re about creating the conditions for your nervous system to feel safe enough to bring cognitive function back online.
It’s not about working harder. It’s about working WITH your nervous system instead of against it.
Strategy #1: Reduce Cognitive Load (Don’t Add More)
This sounds counterintuitive, but it’s the most important strategy.
When you have brain fog, the worst thing you can do is try to “exercise your brain” with puzzles, brain games, or reading challenging material. All of that adds cognitive load.
That doesn’t mean completely stop everything and try not to use your brain. It means don’t try to increase the load drastically.
Because when you add cognitive load drastically when it’s already maxed out, you deepen the survival response.
Instead, you want to REDUCE cognitive load:
Lower stimulation environments:
- Less noise
- Less visual clutter
- Quieter spaces
Simplify decisions:
- Wear the same clothes every day
- Eat the same meals
- Reduce daily choices
Reduce multitasking:
- Do one thing at a time
- Even if it’s really slow
- No switching between tasks
Use external memory:
- Write everything down
- Set alarms and reminders
- Use lists religiously
When you reduce the cognitive demand on your brain, your nervous system has less to manage. And when it has less to manage, it can start shifting out of survival mode.
I know it feels like you’re going backwards by doing less. Sometimes it can feel like giving up or getting worse.
But it’s actually the opposite. It’s giving your nervous system the space it needs to recalibrate itself.
Strategy #2: Prioritize Morning Light Exposure
For most people, brain fog feels worse in the morning. If you think about it, it probably feels worse in the morning, right?
There’s a reason for that.
Your circadian system regulates cortisol production, which affects alertness and cognitive function. When your circadian rhythm (your sleep cycles) is disrupted which it is with CFS and long COVID your brain doesn’t get the wake-up signals it needs.
Light exposure, especially in the first hour of waking up, resets your circadian clock.
Even if you can’t go outside, even if you’re a little bit sensitive to light, sit by a window for 10 to 15 minutes and get light into your eyes.
It’s not just about getting vitamin D. It’s about actually getting the light into your eyes. Because this signals your brain that it’s daytime and cognitive function should start to ramp up. It’s a signal for your body to do that.
When I was bedridden, I positioned my bed so my grandma could open the blinds if I could handle it. That morning light made a noticeable difference in how foggy I felt the rest of the day.
Strategy #3: Strategic Rest Periods (Not Just More Sleep)
Sleep is important, but brain fog isn’t just about sleep deprivation.
A lot of times you might have insomnia, so you might think it’s because of sleep deprivation. That is an additional factor, but it’s not everything.
Your brain needs rest during the day. It needs short periods where you’re not processing anything or processing at a very minimal amount. Not thinking, not doing much.
I’m talking about 5 to 10 minute periods where:
- You close your eyes
- You’re not on your phone
- You’re not listening to anything
- Just nothing
This gives your prefrontal cortex (where you feel a lot of the brain fog) a chance to reset.
It’s like clearing the cache on your computer.
When I was dealing with severe brain fog, I’d set a timer every few hours and just close my eyes for five minutes. It felt like a massive waste of time when I was doing it.
But once I opened my eyes again, it actually helped me function a lot better during those non-rest periods.
It’s almost like clearing the cache in your brain, in your software. Even a few minutes every few hours can make a massive difference.
Strategy #4: Blood Sugar Stabilization
Brain fog gets significantly worse and feels more intense when you have blood sugar swings.
When you have CFS or long COVID, your blood sugar regulation is often impaired. It’s thrown off.
Big meals, high-sugar foods, long gaps between eating all of that creates blood sugar spikes and crashes. And every blood sugar crash deepens the fog.
What helped me:
- Eating smaller, more frequent meals (every 3-4 hours)
- Lots of snacking throughout the day
- Having protein with as many meals as possible
- Avoiding high-sugar foods that create crashes (high-sugar cake, donuts, cookies)
- Not skipping meals, even when not hungry
Your brain actually runs on glucose. When glucose delivery is unstable that’s the big keyword here, unstable cognitive function suffers.
And if it suffers a little bit in a person with a normal nervous system, with a hypersensitive nervous system from CFS or long COVID, that is amplified dramatically.
Strategy #5: Nervous System Regulation Practices
This is where we directly address the survival mode that our nervous system is stuck in.
Your brain fog is a symptom of the nervous system being stuck in high alert. Any practice that shifts you toward a calm and safe feeling will improve cognitive function.
And it doesn’t have to be overly planned or complicated.
Simple practices:
- Very slow, deep belly breaths (just 5 times)
- Gentle humming (stimulates your vagus nerve)
- Light body scans (notice sensations without judging them, without getting emotional about them)
- Spending time in nature (if you can)
The key: These practices should feel calming, not effortful. They shouldn’t feel like a chore.
If meditation stresses you out which for a lot of people it does (very hard to meditate if you have a Type A personality) don’t do it.
If breathing exercises make you anxious, just skip them. There was a time when deep breathing would lead to a flare-up and a panic attack for me. For the longest time, I couldn’t do them.
Find what actually makes your nervous system feel safe. That can help bring cognitive function back.
Strategy #6: Respond Well to the Brain Fog Itself
This might be the most important strategy.
When brain fog hits and you respond with panic, fear, and most of all frustration when you start asking yourself “Why can’t I think? What’s wrong with me? This is never gonna get better. I used to be so smart” that emotional response floods your system with stress hormones.
And stress hormones reinforce the survival state, which only deepens the fog.
But when you can respond to brain fog with acceptance and just logical understanding:
“Okay. My nervous system is in protection mode right now. This is temporary. I’m going to reduce my cognitive load and give it some space. I’m going to respond well to the symptoms.”
You’re no longer adding fuel to the fire.
And this really is the Golden Rule of Recovery in action.
The Golden Rule of Recovery: If you did this one thing, you would recover. Your success is determined by how well you respond to symptoms.
It’s not about the actual symptom. It’s about how you respond to the symptom.
I want to make it very clear I’m not saying this is easy. When you can’t think clearly, it’s pretty terrifying.
But practicing a calm response, even when you don’t fully believe it, starts to signal safety to your nervous system. And safety is what allows cognitive function to return.
Strategy #7: Gradual Cognitive Reintroduction
As your fog starts to lift (and it will), you want to reintroduce cognitive activities gradually.
Not all at once. Not “I feel a little better, so I’m gonna go read for an hour and have a three-hour conversation and start making complex decisions.”
Start with baby steps:
- Five minutes of reading light material
- One short, simple conversation
- One small decision
- Just build up slowly as your capacity increases
This is exactly like working out or physical pacing, but for your brain.
When you push too hard, too fast, you trigger the survival response again. But when you build gradually and take your time when you put your foot on the gas pedal and take it off the gas pedal, speed up and slow down you teach your nervous system that cognitive function is safe and sustainable.
The 3 Biggest Mistakes That Keep People Stuck
Now you have some strategies of what to do. I also want to share some common mistakes I’ve seen that keep people stuck with brain fog.
Here are the three biggest mistakes I see when people are trying to solve this exact symptom.
Mistake #1: Trying to Fix It with More Cognitive Input
People think: “If I just do more brain exercises, if I just read more, if I push myself to think harder using sheer will and grit, I’m gonna break through the fog.”
No. You’re gonna deepen it.
It’s not like being stuck in fog and you’re in a car and you can just drive your way out of it. It’s not how it works.
Your brain does not need more stimulation. It actually needs less. It needs space to come out of survival mode.
Me personally, I spent months trying to force myself to read, trying to study more material and read medical articles to try to stay engaged, to keep my brain active.
I actually just got worse.
It wasn’t until I gave myself permission to reduce cognitive demand that things started improving.
Mistake #2: Catastrophizing the Symptoms
I used to tell myself all the time:
“This brain fog means my brain is damaged. This is early dementia. I’m never gonna think clearly again. I’m never gonna be as sharp as I was before.”
I had these exact thoughts thousands and thousands of times before I understood what was going on.
Realistically, those are terrifying thoughts. And they’re also reinforcing the survival state that’s causing the fog.
Your brain (as long as you’ve had all your tests and scans done) is not deteriorating. It’s just protecting you.
The fog is reversible. It’s just downregulating your cognitive function.
When the catastrophic thoughts come up, when scary thoughts just jump into your mind (and they will), bring in logic:
- “This is just a nervous system symptom”
- “This is my brain in survival mode”
- “This is temporary”
- “Thousands of other people have also recovered from this cognitive challenge”
Mistake #3: Comparing Your Cognitive Function to Your Previous Baseline
You might tell yourself:
“I used to be so sharp. I could read complex materials. I could multitask. Now I can barely keep up with a conversation.”
That comparison from where you are today to what you once were is what creates the suffering and the difficulty.
That creates stress. And stress deepens the fog.
Just remind yourself: You’re not competing with your old self. Your old self is actually what got you in this position in the first place.
You’re working with where you are right now. And as you heal, cognitive function comes back.
But measuring yourself against your old self while you’re still in recovery is just gonna add to the stress. It’s gonna add to an already stressed system.
So understand that while you may have been very sharp before and you had a very intuitive and very sharp mind, that’s what got you here in the first place.
Two Different Approaches to Brain Fog
I want to paint two different pictures for you here. Let me show you two different people dealing with brain fog.
Person A:
Brain fog hits. They panic. They try to force their brain to work. They push through conversations even though they’re completely lost. They stress about whether this is permanent. They compare themselves to their old cognitive functioning.
Result: The fog gets worse. They feel more hopeless. The cycle deepens.
Person B:
Brain fog hits. They recognize it as a nervous system symptom. They reduce cognitive load. They practice calming their system. They respond to the fog with acceptance and logic instead of emotionally. They gradually reintroduce cognitive activities as capacity builds.
Result: The fog starts to lift and functioning returns.
Notice how the difference here isn’t the severity of their fog.
The difference is how they respond to it and what they do after that fog shows up.
Person A fights the fog and that makes it worse. Person B works with their nervous system and creates the conditions for healing.
It’s about creating the conditions and environment for your nervous system to recalibrate itself.
That is the game changer here.
What You Need to Remember
Number one: Brain fog in CFS and long COVID is a nervous system symptom, not a brain structure problem. Your brain is functioning exactly as designed. It’s in survival mode and conserving energy for essential functions.
Number two: You cannot force your way out of brain fog. The solution is reducing cognitive load and creating safety signals for your nervous system, not adding more stimulation.
Number three: How you respond to the fog determines whether it deepens or lifts. Panic and forcing only make it worse, while acceptance, gentle support, and bringing logic into the equation help it heal.
Your Next Step Forward
I know brain fog is one of the most frustrating, scary symptoms you can deal with.
I know what it’s like to feel like you’re losing your mind and losing your thoughts, losing your whole personality. Feeling like your brain is broken and feeling like you’ll never think clearly again.
I’ve been there. I’ve been in that thick fog where I couldn’t remember my own address, couldn’t follow conversations. I felt like I was just disappearing, and there was this invisible wall between myself and reality.
But here’s what I learned (and I’ll emphasize it again I’ve said it maybe ten times in this article):
Your brain is not broken. It is in a protective state.
And when you understand what it’s protecting you from, when you address the nervous system state underneath the fog, cognitive function does come back.
It doesn’t happen overnight. I’m not gonna sit here and say it’s easy and it happens instantly.
It happens gradually, in layers. Some days will be clearer than others.
But it does come back.
Today, Pick Just One Strategy
Pick just one of these seven strategies. Just one.
Maybe it’s getting morning light. Maybe it’s reducing cognitive load by simplifying one decision. Maybe it’s practicing a calm response the next time the fog hits.
Just one strategy.
Start there and give yourself permission to heal at the pace that your nervous system needs, not the pace that your mind wants.
Your mental clarity is waiting for you on the other side of this. I promise.
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Drop a comment below: What’s been your experience with brain fog?
Always remember that you are a thriver and you are just one mind shift away from living life with thriving health.
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