GLP-1 + 35°C + reduced thirst sensation = quietly dehydrated by 4 pm. Fix in advance.
How much
3 litres of water minimum. Add 500 ml for every 30 minutes of exercise. More on hot days.
Electrolytes matter
Plain water isn't enough if you're sweating heavily. Add a pinch of salt and squeeze of lime to one or two glasses. Or use ORS once a day in summer.
Signs of dehydration
Dark yellow urine, dry lips, headache, fatigue. These should be rare; if they happen, you're behind on water.
