A twelve-hour shift in Kuwait costs you more water than you expect, and the dangerous part is that you often do not feel it happening. Thirst arrives after your body has already dropped below where it should be. On a long shift that gap turns a normal day into a headache at hour nine, cramps in the legs, or a dizzy spell on the drive home.
You lose water all shift through sweat and breathing, but the thirst signal lags behind the loss, especially in heat and especially when you are busy. By the time your mouth feels dry you may already be a litre down. Waiting for thirst means spending the second half of the shift catching up instead of staying level.
The amount depends on where you work. On an outdoor site in summer, with sun on you and humidity holding the heat in, a rough range for a grown adult doing physical work is 500 to 750 ml per hour. In an air-conditioned office, control room or mall, 200 to 250 ml per hour is closer to reality.
Those numbers are a starting point, not a prescription. Read your own signals: pale urine and no headache at the end of the shift mean you are roughly on track. Dark urine and a pounding head mean you undershot.
Confusion, hot dry skin and fainting are not ordinary dehydration; they can point to heat stroke. Get help and cool the person down immediately.
Coffee is part of life here and nobody is asking you to quit it. But a karak or an espresso does not replace water. Caffeine can push you to urinate more, and energy drinks add sugar and stimulants on top of the fluid gap, so you get a spike and then a flatter crash. A rule that works: for every coffee, drink a glass of water with it.
Log the shift in Shiftat-E the same day, with a one-line note on the heat and the site.
Plain water covers most shifts. If you are soaked through by hour six, water alone can leave you feeling flat, because sweat carries salt with it. An electrolyte tablet or one oral rehydration sachet is enough for a long hot shift. You do not need a sugary sports drink every hour, and drinking a huge amount at once is worse than steady sipping, because your body dumps what it cannot use.
Shiftat-E is free on Google Play: download it here. Log your long shifts and your hours, and you will see which days drain you hardest instead of guessing.
