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.
