Do you ever have those days where your brain just feels… full?

You slept, technically.

You’ve opened your laptop.

You’ve stared at the same email for approximately seven minutes.

You’ve picked up your phone, forgotten why you picked it up, put it down, and then immediately picked it up again.

Your brain has 47 tabs open and apparently one of them is playing music, but you cannot figure out which one.

Brain fog.

I’ve definitely had days where I assume I need more caffeine to fix it. But the more I’ve paid attention to how my body works, the more I’ve realised that sometimes my brain doesn’t need another stimulant.

It needs the basics.

Water. Food. Movement. Sleep.

Not particularly groundbreaking, I know. But annoyingly, the boring stuff tends to work.

So if your brain has been feeling a little 404 error lately, these are four places I’d start.

1. Hydrate Before You Decide You’ve Lost All Brain Function

This is probably the easiest one to forget.

You wake up, start getting ready, check your phone, start working and suddenly it’s 11am and you’ve consumed an iced matcha but approximately four tablespoons of actual water.

Meanwhile, your brain is heavily dependent on adequate hydration.

Research suggests that even mild dehydration can negatively affect aspects of cognitive performance, including attention and executive function, while also affecting mood and increasing feelings of fatigue.

Basically, sometimes the afternoon brain fog isn’t proof that you’re incapable of doing your job.

You might just need some water.

I’ve started trying to hydrate earlier in the day rather than realising at 7pm that my water bottle has become purely decorative.

The habit: Have water when you wake up and keep it somewhere you can actually see it.

And yes, coffee and tea contribute to fluid intake too. Your iced matcha isn’t the enemy here.

We love evidence-based good news.

2. Please Eat an Actual Breakfast

I’m not saying everyone needs breakfast the second they wake up.

Some people genuinely aren’t hungry in the morning.

But if you’re trying to function on caffeine, half a banana and ambition until 2pm…

We may have located part of the problem.

Your brain requires a steady supply of energy, and food provides the nutrients needed to support normal brain function.

Protein is particularly useful because it supplies amino acids, which your body uses for countless processes, including making neurotransmitters.

But I’m not interested in the internet’s current obsession with making every meal contain enough protein to feed a professional rugby team.

Just build something balanced.

Greek yoghurt + berries + chia.

Eggs + avocado + toast.

Oats + yoghurt + nut butter.

A smoothie with fruit, protein and healthy fats.

And please include the carbohydrates.

Your brain uses glucose as a major energy source.

This isn’t the time to be afraid of toast.

The habit: Instead of asking whether breakfast is perfectly “healthy,” ask whether it’s actually going to keep you fed and functioning.

3. Move Before Reaching for Another Coffee

This has genuinely surprised me.

Sometimes I’ll be sitting at my desk feeling completely mentally cooked and convince myself that I need another drink, snack or motivational speech.

Then I’ll go outside for ten minutes.

And suddenly…

Oh.

There’s a person in there again.

Physical activity increases blood flow throughout the body, including to the brain, and regular exercise is associated with benefits for cognition, mood and mental health.

But your “brain fog walk” doesn’t need to become a workout.

That’s important.

You don’t need leggings.

You don’t need Strava.

You don’t need to hit 10,000 steps.

Walk around the block.

Stretch for five minutes.

Take the stairs.

Put on one song and move around your apartment.

Go outside between meetings.

Personally, I think movement is especially helpful when I’ve been staring at a screen for hours because it interrupts that feeling of being mentally trapped at my desk.

The habit: When your concentration disappears, try ten minutes of movement before automatically reaching for more caffeine.

Your brain might want circulation, not another latte.

4. Sleep Is Literally Brain Maintenance

This is the one nobody wants to hear.

Because we’d all prefer a cute supplement.

But sleep remains undefeated.

While you’re asleep, your brain isn’t simply switching off. Sleep supports memory consolidation, learning, emotional processing and other essential brain functions.

Researchers are also studying the brain’s glymphatic system, which helps clear metabolic waste, and evidence suggests this clearance process is particularly active during sleep.

Which means your nightly eight-ish hours aren’t wasted time.

Your brain is doing admin.

And you know exactly what happens when admin doesn’t get done.

Chaos.

When I haven’t slept properly, I notice it everywhere.

My attention span disappears.

Everything feels more dramatic.

I’m hungrier.

I’m less patient.

Tasks that would normally take ten minutes suddenly feel like I’m being asked to solve international diplomacy.

No supplement can completely out-wellness chronic sleep deprivation.

The habit: Treat your bedtime like something that protects tomorrow rather than something you negotiate with tonight.

That might mean putting your phone away earlier, keeping your bedroom cool and dark, reading before bed or simply admitting that the episode can wait until tomorrow.

Painful, but necessary.

Also… Maybe Your Brain Is Just Overstimulated

This deserves an honourable mention because I think modern brain fog isn’t always about what we’re missing.

Sometimes it’s about how much we’re consuming.

Email.

Slack.

Instagram.

TikTok.

Podcasts.

News.

WhatsApp.

Music.

Netflix playing in the background while we’re simultaneously scrolling something completely different.

Our brains rarely get silence anymore.

I’ve started appreciating moments where I’m not consuming anything.

Driving without immediately putting something on.

Going for a walk without headphones.

Sitting outside.

Leaving my phone in another room.

Doing one thing at a time.

It initially feels weird because we’re so used to filling every second with input.

Then it starts feeling ridiculously good.

Your Brain-Fog Reset

The next time I feel mentally foggy, I’m trying to stop immediately assuming that I need to push harder.

Instead, I’m checking the basics.

Have I had water?

Have I eaten enough?

Have I moved today?

Did I actually sleep?

Have I been staring at a screen for six consecutive hours?

Sometimes brain fog can have medical causes, including medication effects, nutrient deficiencies, hormonal changes, sleep disorders and other health conditions, so persistent or significant brain fog is worth discussing with a healthcare professional.

But on an ordinary my brain has left the group chat afternoon?

I’m starting with the boring stuff.

Water.

Food.

Movement.

Sleep.

A little less noise.

Because sometimes your brain doesn’t need another hack.

It just needs you to take care of the person it’s attached to.