You sweat, you drink water, and yet you feel drained after the big sessions? You may be missing a piece of the puzzle: electrolytes. Here's what they are, what they do, and in which situations they're genuinely useful.
What are electrolytes?
They are electrically charged minerals, essential to the exchanges between your cells: sodium, potassium, magnesium, calcium and chloride. They drive hydration, muscle contraction and nerve transmission. When you sweat, you don't just lose water — you also lose these minerals.
What the science says (the regulated version)
- Magnesium contributes to normal electrolyte balance, normal muscle function and to reducing tiredness.
- Potassium contributes to normal muscle function and to the normal functioning of the nervous system.
- Calcium contributes to normal energy metabolism.
When are electrolytes useful?
- Long or intense sessions (over an hour, sustained cardio, circuits).
- Heat: in summer, sweating soars — and your mineral losses with it.
- Heavy sweaters: if your t-shirt has white salt marks after the session, that's a telling sign.
- Repeated training: several sessions a week without time to recharge through food.
For a 30-minute walk, water is enough. It's the build-up of effort + duration + heat that makes recharging minerals relevant.
Water alone vs water + electrolytes
Drinking lots of plain water after a big sweat loss dilutes the remaining minerals further. It's the classic trap of "quantity without quality" hydration. An electrolyte intake supports rehydration — either through food (banana, dried fruit, mineralised waters), or through a supplement that's simple to dose.
The smart format: the tablet
Our Electrolyte Complex brings together the 5 essential minerals in a tablet, sugar-free and vegan — to slip into your gym bag, no powder to measure or sugary drink. 2 tablets per day with a large glass of water, on the days that count.
Key takeaways
- Sweating = losing water AND minerals.
- Useful mainly for: long efforts, heat, heavy sweating.
- Magnesium contributes to reducing tiredness and to electrolyte balance.
Find the Electrolyte Complex in the Trisbulkup Stack (-15% with code TRISBULKUP) or in the Performance & Muscle range.
Food supplement — does not replace a varied, balanced diet or a healthy lifestyle.