Dehydration isn’t just caused by exercise and sweating. Poor sleep, intense physical activity and hot weather can all increase fluid loss, while older adults may be vulnerable year-round. Factors such as demanding training schedules and synthetic activewear can also contribute.
When we sweat, we lose more than water. We also lose electrolytes – essential minerals including sodium, potassium, magnesium and calcium – that help regulate fluid balance and support key bodily functions. These electrically charged minerals are vital for muscle contractions, nerve signalling and energy production. When levels drop, symptoms such as fatigue, muscle cramps, headaches and sluggishness can follow.
While the body naturally contains electrolytes, dehydration can significantly reduce levels. Fortunately, they can be replenished through supplements, tablets and ready-to-drink products. Although not always necessary, electrolytes can be particularly helpful during intense exercise, periods of under-hydration, or after consuming alcohol or caffeine.
PhD neuroscientist Dr Paul Anastasiades explains: “Alcohol is a diuretic and so increases water loss through urination. If consumed in large quantities, this can lead to dehydration and hangovers. Although dehydration is not the sole cause of a hangover, it is one of the simplest symptoms to treat.”
Professional athletes have long relied on electrolytes for hydration and recovery, but these mineral-rich products are increasingly finding a place in everyday wellness routines. I tested some of the best options available to see which delivered on both taste and performance.
