Why water alone is not always enough

This is relevant for athletes, HYROX athletes, people who sweat a lot, shift workers, early-morning exercisers, and anyone who notices that drinking only water doesn’t always feel sufficient.

Especially during intense training, hot days, or long workdays, staying hydrated may require more than just a few glasses of water.

Many people drink water yet still feel tired, weak, thirsty, or flat. This raises the question of whether they simply need to drink more water or whether something else is at play.

The problem is that hydration is often viewed too simplistically. More water is not always automatically better. Your body also needs minerals that play a role in fluid balance and normal bodily processes.

When you sweat, you lose not only fluids but also electrolytes. The best-known electrolytes are sodium, potassium, magnesium, and calcium.

Sodium plays an important role in fluid balance.

Potassium is involved in muscle function.

Magnesium supports various normal processes in the body.

Calcium is important for bones and muscles.

Water replenishes fluids. Electrolytes help complete the bigger picture of hydration. That does not mean you always need electrolytes, but during exercise, in hot weather, when sweating, or on long days, they can be valuable.

Would you first like to understand exactly what electrolytes are? Also read: What are electrolytes?.