What is Sodium?

Article by Ashley C

Nutritionist

Updated: October 28, 2025

4 minute read

What Is Sodium?

At some point, sodium became the bad guy. Cut the salt. Watch your intake. Check the label. It's been drilled into us for so long that most people genuinely believe that less sodium equals better health. And if you're eating ultra-processed food every day, there's some truth in that conversation.

But here's what that conversation completely missed. Sodium is one of the most important electrolytes in your body. And if you're active, sweating regularly or trying to actually hydrate properly, you probably need more of it, not less.

What Sodium Is Actually Doing🧂

Every time your heart beats, sodium is involved. Every time a muscle contracts, sodium is involved. Every time your body holds onto fluid rather than flushing it straight through, sodium is involved.

It regulates fluid balance inside and outside your cells, transmits nerve signals, maintains blood pressure and plasma volume and enables your muscles to work properly. It also stimulates thirst, which sounds minor but is actually critical because if you're not feeling thirsty when you're dehydrated, you're not going to drink.

For active people, sodium is non-negotiable. When you sweat, it's the primary electrolyte you lose, anywhere from 0.5 to 3 grams per hour depending on how hard you're working and how hot it is. When those levels drop, things go wrong quickly.

The Bit Nobody Tells Athletes 🤔

General sodium guidelines are written for sedentary people eating processed food all day. They are not written for people who train.

If you're working out regularly, sweating in the heat or doing back to back sessions, your sodium requirements are completely different to someone who sits at a desk and eats ready meals. Applying the same "cut the salt" logic to your lifestyle is like wearing a winter coat in July because the calendar says it's cold season.

When sodium drops too low during exercise, the risk of hyponatremia kicks in. Blood sodium falls below safe levels, and suddenly you're dealing with nausea, confusion, headaches and impaired coordination. In serious cases it gets significantly worse than that. It's not just a performance issue. It's a safety one.

And ironically, this is most common in people who drink a lot of plain water without replacing electrolytes. Doing the "right" thing but missing a crucial piece of it.

What Happens When Sodium Gets Too Low? 🔎

This one is worth knowing about, especially for people who drink a lot of water and think they're doing everything right.

Consuming large amounts of plain water without replacing sodium can lead to hyponatremia, where blood sodium levels fall too low.

Symptoms include nausea, headaches, confusion and fatigue. In serious cases it gets a lot worse than that.

It's not common, but it's real. And it's the reason that hydration is never just about volume. It's about balance.

Why Water Alone Keeps Letting You Down 💧

Here's the science in plain terms. Sodium helps your body retain fluid. When there's not enough of it, water passes through rather than staying where your body needs it.

Research shows drinks containing sodium restore plasma volume after exercise far more effectively than water alone. Better fluid retention means better cardiovascular stability, better temperature regulation, sustained energy and actual performance hydration rather than just going through the motions of drinking.

For most active people, somewhere between 300 and 600 milligrams of sodium per hour of exercise is the sweet spot for maintaining hydration and electrolyte balance. OWNKIND is built around that.

On the Blood Pressure Conversation💧

Yes, very high sodium intake is linked to increased blood pressure and cardiovascular risk. That's real and worth knowing. But the research is more nuanced than the headlines suggest. Current evidence shows that moderate sodium intake, roughly between 2.3 and 4.6 grams per day, poses little cardiovascular risk for most healthy people. Risk increases meaningfully when intake consistently exceeds around 5 grams a day, which is territory most active people aren't anywhere near when they're sweating regularly.

There's another piece of this that almost never gets mentioned. Potassium intake matters just as much as sodium intake. A diet high in sodium and low in potassium is what's strongly linked to hypertension and cardiovascular issues. When potassium is sufficient, sodium becomes far less of a concern. Which is exactly why OWNKIND includes both and balances them properly, because electrolytes don't work in isolation.

Why It's in OWNKIND Specifically 🔎

Every OWNKIND sachet contains 200mg of sodium from Himalayan salt, carefully balanced to support hydration and performance without going overboard. It sits alongside potassium, magnesium, calcium and zinc in a formula that closely mirrors the electrolytes you actually lose through sweat.

Clean ingredients. Proper balance. A formula your body recognises and can use.

That's the whole point. Not a supplement. Not a sports drink loaded with sugar and artificial everything. Just the minerals your body needs, in the right amounts, in a form it can actually absorb.

Cramps, Focus, Energy, Recovery 🧠

Low sodium doesn't just affect your fluid balance. It affects your neuromuscular function, which means how well your muscles contract and how quickly your nerves fire. When sodium is depleted, cramping risk goes up significantly, particularly during prolonged or intense exercise.

It also affects your brain. Focus, coordination, reaction time and mood are all impaired when electrolyte balance is off. The feeling of being a bit slow, a bit foggy, a bit off your game mid-session? That's often sodium doing its quiet disappearing act while you've been too busy drinking plain water to notice.

What OWNKIND Does With This.

Each OWNKIND sachet is formulated to replace the sodium lost through sweat, support fluid retention and optimise hydration when it matters most. Not too much, not too little. Balanced alongside potassium, magnesium, calcium and zinc to mirror what your body actually loses and what it actually needs to restore.

Clean, effective, balanced. No unnecessary extras. Just the electrolytes doing their job properly.

Feel the benefits of Ownkind Today

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