Hydration for Shift Workers: What a Firefighter Knows About Staying Hydrated

Our founder Danny Burnett is a full-time firefighter. Uthrive was born because hydration on the job isn't optional. Long day and night shifts, heavy turnout gear and call-outs that can come at any minute teach you fast how easy it is to fall behind on fluids.

You don't have to fight fires to know the feeling. Nurses, paramedics, police, tradies, miners and hospitality workers all deal with long shifts, broken sleep and hot conditions. Here's what shift work teaches you about staying hydrated.

Why shift workers get dehydrated

• No set break times. When the job decides when you stop, drinking gets pushed back.
• Heat and protective gear. PPE, hi-vis and turnout gear trap heat and make you sweat more.
• Broken sleep and night shifts. Your normal routine of meals and drinks goes out the window.
• Caffeine instead of fluid. Coffee and energy drinks often replace water on long shifts.

What firefighters lose in a shift

Firefighting is an extreme example, which is why it's a useful one. Megan Lautz, writing for Firefighter Nation, notes that a firefighter can lose around 40 ounces (about 1.2 litres) of sweat in a typical 30-minute fire suppression effort, and that the amount of sodium lost in sweat varies a lot from person to person. She also points out that drinking water alone isn't enough when sweat losses are high, because the sodium needs replacing too.

Most shift workers won't sweat like that every day. But on a hot summer shift, the same principles apply.

7 hydration habits that work on shift

1. Start the shift already hydrated

Drink a glass or two of water with your pre-shift meal. Catching up later is much harder than starting topped up.

2. Keep a bottle where you work

In the truck, the ute, the nurses' station or your locker. If it's within reach, you'll drink it.

3. Check your colour

Pale straw-coloured urine is a good sign. Dark yellow means it's time to drink more.

4. Add electrolytes on hot or heavy sweat days

If you're sweating through your shirt, you're losing sodium. That's when a drink with electrolytes earns its place alongside water. On cool, air-conditioned shifts, water and normal meals are usually enough.

5. Eat real food

Meals and snacks bring fluid and electrolytes too. Fruit, soups and a properly salted dinner all help.

6. Don't let caffeine replace water

A coffee is part of shift life. Just make sure it isn't your only drink across a 12-hour shift.

7. Rehydrate before you sleep

After a night shift, have a drink before bed so you don't wake up dry.

Know the warning signs

Headaches, dizziness, cramps, unusual fatigue and very dark urine can all be signs you're getting behind on fluid. In hot conditions, take signs of heat illness seriously. Stop, cool down, drink and get help if you feel confused or unwell.

Built for the people who show up

Danny built Uthrive between shifts because he wanted something he could grab from the station fridge: real sodium from Australian Lake Deborah salt, real fruit, no added sugar and nothing artificial. Read the full story on Our Story, or check out how to choose an electrolyte drink.

FAQ

How much water should I drink on a 12-hour shift?

It depends on your size, the heat and how hard you're working. Drink regularly, keep an eye on your urine colour, and drink more on hot or physical shifts.

Do shift workers need electrolytes?

On hot, physical shifts where you sweat a lot, replacing sodium as well as water makes sense. On cool, desk-based shifts, water and normal meals are usually enough.

What's a good drink for night shift?

Water first. Add a no added sugar drink with electrolytes if you're working hard or it's hot, and keep caffeine to the first half of the shift so you can sleep after.

This article is general information, not medical advice. If you have a health condition, or feel unwell in the heat, talk to your doctor.