The anxiety trigger I completely overlooked

One thing I genuinely don't understand about myself is why I'm so bad at drinking water.

It's one of the most basic things you can do for your body. It doesn't cost anything. It doesn't take any effort. Yet somehow I'll get halfway through the afternoon before I realise I've barely had a glass.

I honestly don't know why.

Maybe I get too absorbed in work. Maybe I just don't feel thirsty very often. Whatever the reason, it's become such a recurring habit that I've started wondering whether it's contributing to the way I feel.

More specifically, I've noticed something.

On days when I haven't drunk much water, I seem to notice my heart more. Then I'll eat lunch, my heart rate picks up a little, and before I know it my brain is asking the same old questions.

"Why does it feel like it's beating so hard?"

"Has it always done this?"

"Is this normal?"

If you have health anxiety, you'll probably know exactly where that story ends.

I've spent a long time trying to work out whether this was just another anxiety pattern my brain had invented, or whether there was actually something behind it.

As it turns out, I think there's a bit of both.

Your body notices dehydration before you do

Most of us think dehydration means feeling thirsty.

The reality is you're often mildly dehydrated long before that happens. You wake up slightly dehydrated after sleeping, get busy with work, have a couple of coffees, and suddenly it's mid-afternoon and you've barely drunk any water.

Your body copes remarkably well, but it has to work a little harder.

When you're dehydrated, your blood volume drops slightly. To keep everything moving efficiently, your heart often beats a little faster. Usually it's nothing dramatic. Most people wouldn't even notice.

The problem is... I'm not most people.

If my body changes in a way that I can feel, there's a good chance I'll notice it.

Then you eat...

The other thing I've realised is that it often happens after eating.

Again, that isn't necessarily a coincidence.

When you eat, your body sends more blood towards your digestive system to help process your food. Your heart naturally adjusts to keep everything balanced. It's a completely normal part of being human.

But if you're already a little dehydrated, you might notice that change more.

Or at least, I do.

My heart just feels... louder.

Not literally, of course, but suddenly I'm aware of it.

Every beat.

Not because it's racing out of control, but because my brain has decided it's something worth paying attention to.

And once I've noticed it, that's it.

I'm trying to work. I'm watching TV. I'm talking to someone. But somewhere in the background, my attention keeps drifting back to my heartbeat.

It's distracting.

Sometimes I'll check my pulse, but more often than not I don't need to. I can already feel it. It's like my brain has turned the volume up on something that everyone else seems able to ignore.

That's when the questions start.

"Why can I feel it so much?"

"What if something's wrong?"

The more attention I give it, the more aware I become.

The more aware I become, the more anxious I feel.

It's a vicious little cycle.

The problem isn't always the heart

One thing I've slowly been learning is that there are two separate things happening.

The first is physical.

My heart probably is beating a little faster. Maybe I'm dehydrated. Maybe I've just eaten. Maybe I've had too much coffee. Maybe I've walked upstairs a bit too quickly.

Those are all perfectly reasonable explanations.

The second is psychological.

My anxious brain notices that perfectly normal change and immediately starts looking for danger.

Health anxiety doesn't always create symptoms.

Sometimes it simply shines a spotlight on sensations that were already there.

The sensation isn't imaginary.

The story my brain tells about the sensation often is.

That's a really important distinction.

Understanding beats reassurance

One thing I've realised over the years is that reassurance isn't always someone telling you that you're okay.

Sometimes reassurance comes from understanding what's happening.

Knowing that dehydration can make your heart work a little harder.

Knowing that digestion naturally changes your heart rate.

Knowing that anxiety makes you hyper-aware of sensations most people never even notice.

None of that makes the feeling disappear instantly.

But it does make it a little less mysterious.

And anxiety absolutely loves mystery.

One less thing for anxiety to latch onto

I'm making more of an effort to drink water throughout the day.

Not because I think hydration is some magical cure for anxiety.

Not because I think every symptom disappears if I drink two litres of water.

Simply because if I can remove one physical trigger that makes me notice my body more, I'm giving my anxious brain one less thing to latch onto.

That feels like a worthwhile experiment.

Will it solve everything?

Of course not.

But anxiety isn't usually about finding one magic solution.

It's about stacking as many small things in your favour as you can.

I'm not saying dehydration causes anxiety.

I'm not saying every time my heart feels different it's because I need a glass of water.

But I do think our brains are incredibly good at taking small physical changes and turning them into much bigger stories.

If something as simple as staying hydrated removes even one of those stories, then it feels like a habit worth building.

Now I just need to work out why I still find it so ridiculously difficult to do something as basic as drinking enough water!