Short answer: magnesium is involved in hundreds of processes — muscle and nerve function, energy production, blood sugar and sleep — and many people don't get enough from diet alone. Sweating in our climate and high stress can deplete it further, which can show up as cramps, fatigue and poor sleep.

What magnesium does

It's a workhorse mineral: it helps your muscles relax (including after exercise), supports steady energy production, plays a role in blood-sugar regulation, and is linked to sleep quality and a calm nervous system. Because it's used so widely, running low can feel like a vague mix of tiredness, tension and restless sleep.

Signs and who's at risk

Possible signs of low magnesium include muscle cramps or twitches, fatigue, poor sleep and feeling wired-but-tired. Heavy sweating, high stress, low intake of greens, nuts and wholegrains, and certain medications can all lower your levels. Blood tests aren't always reliable for magnesium, so diet and symptoms matter.

How to top up

Food first: leafy greens, nuts, seeds, beans and wholegrains are good sources. If you sweat a lot or want convenient support, electrolyte options that include magnesium help — our Hydrate+ Electrolyte Hydration Tablets top up sodium, potassium and magnesium without the sugar load of typical sports drinks. These support general intake — they're not a treatment for a diagnosed deficiency, which a doctor should guide.

FAQ

What are signs I'm low on magnesium? Cramps, fatigue, poor sleep and tension are common, though non-specific — diet review helps.
Can I take magnesium every day? Most people tolerate moderate daily intake; very high doses can cause loose stools. Check with a doctor if you have kidney issues.
Does magnesium help sleep? It supports a calm nervous system and may help some people sleep better, alongside good sleep habits.

General education only, not medical advice. People with kidney conditions should consult a doctor before supplementing.