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Electrolytes and Hydration: Why You Need Them and How fourfive Can Help

February 03, 2026
  • Education

Every time you sweat — whether that’s during a workout, a long day in the sun, or a hectic work schedule — your body loses water and electrolytes. These charged minerals play a critical role in hydration, energy, muscle function, and overall performance.

Understanding electrolytes and how they work can help you stay energised, prevent cramps, and support recovery. Below, we break down why electrolytes matter, when you need them most, and how fourfive’s range of hydration products can help you stay balanced — every day.

What are electrolytes?

Electrolytes are minerals — like sodium, potassium, magnesium and calcium — that help maintain fluid balance, support nerve signalling and muscle contraction, and regulate energy and hydration levels in the body. While most people get electrolytes from food and drink, certain conditions increase the need for targeted replenishment.

Hydration isn’t just about drinking more water. Without the right electrolyte balance, water does not stay where your body needs it most — in your cells and muscles — and you may still feel tired, sluggish or dehydrated.

Key benefits of electrolytes

  • Efficient hydration: Electrolytes help your body absorb and retain water, so what you drink actually stays where it’s needed.
  • Muscle and nerve function: They play a key role in muscle contraction and nerve signalling, which supports performance and can help reduce cramping.
  • Energy and focus: When fluid and mineral balance is off, energy often drops. Keeping it steady tends to support better focus and day-to-day energy.
  • Recovery support: Replacing electrolytes after exercise helps muscles recover and can reduce that heavy, drained feeling post-session.
  • Temperature regulation: Proper hydration, supported by electrolytes, helps your body regulate temperature during heat, training, or long days on your feet.

When do you need electrolytes most?

Electrolyte needs increase when you lose more fluids than you’re taking in — such as:

  • During or after long or intense workouts
  • In hot or humid weather
  • When you sweat a lot
  • After illness with dehydration (e.g. sickness or fever)
  • When you’re travelling or consistently busy

For many everyday activities, plain water is sufficient — but when sweat loss is high or repeated, replacing lost electrolytes can make a meaningful difference to how you feel and perform. :contentReference[oaicite:6]{index=6}

Why choose fourfive for hydration support

At fourfive, we believe hydration should be thoughtful, not confusing. Our Hydro range is formulated to replace key electrolytes your body loses through sweat, while also supporting energy, recovery and overall performance.

Every product is:

  • Informed Sport tested — trusted by athletes and professionals
  • Free from artificial fillers and unnecessary bulking agents
  • Easy to use on the go — ideal for workouts, busy days or travel

fourfive Hydro Plus Hydration Tablets - SHOP NOW

Perfect for daily use or during longer training sessions, these tablets dissolve quickly in water to help replace sodium, potassium and magnesium lost through sweat. They’re a low-calorie, vegan-friendly hydration option that supports fluid balance and sustained performance — without artificial sweeteners.

Ideal for: gym sessions, long commutes, summer days and anywhere you want balanced hydration with minimal fuss.

Person holding Fourfive Plus Hydro effervescent hydration tube, with on-image text stating 95% felt more hydrated and 88% felt improved post-workout recovery

fourfive Hydro Plus Energy & Focus Sachets - SHOP NOW

Designed for days when you need a hydration boost and an energy lift. These sachets combine essential electrolytes with a touch of natural energy support to help you stay sharp and hydrated whether you’re training, travelling or tackling a busy schedule.

Easy to mix and sip throughout activity, they’re a go-to choice for workouts, travel days or mid-afternoon slumps.

Fourfive Plus Hydro Energy and Focus sachet on a textured background, highlighting key ingredients including electrolytes, natural caffeine, Lion’s Mane, Korean ginseng and vitamin B complex

fourfive Hydro Plus Hydration Recovery Sachets - SHOP NOW

After especially tough workouts or long periods of exertion, recovery matters. These sachets blend key electrolytes with BCAAs, L-Glutamine and adaptogenic mushrooms to support fluid rebound, muscle repair and reduced fatigue — helping you come back stronger the next day.

Fourfive Plus Hydro Everyday Recovery sachet displayed on a textured surface, showcasing recovery benefits with electrolytes, BCAAs, cordyceps, L-glutamine and vitamins B and C

How to use electrolyte hydration products

For most people, the simplest approach is to mix a tablet or sachet with water during or after activity — especially when sweat loss is high. You can also use them throughout the day to keep hydration levels steady on busy or hot days. Tailor intake to your activity level and thirst — your body is the best guide.

Hydration tips beyond electrolytes

  • Drink water regularly throughout the day
  • Pair electrolyte intake with balanced meals and snacks
  • Monitor urine colour — pale yellow usually means good hydration
  • Consider hydration products during long workouts or travel

Summary

Electrolytes are essential minerals that help your body maintain fluid balance, support muscle and nerve function, and sustain energy. While regular food and drink supply electrolytes, targeted replenishment with products like fourfive Hydro tablets and sachets can help you stay hydrated, focused and performing your best — especially when excess sweat loss or intense activity is involved.

Ready to hydrate smarter? Explore the fourfive Hydro range and find the hydration support that fits your routine.