The ultimate guide to hydration & electrolytes for performance
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Hydration is no longer just about drinking more water.
True hydration is about replacing the minerals your body actually loses — especially when training, sweating, traveling, recovering, or simply living an active lifestyle.
Most people are chronically under-hydrated, not because they don’t drink enough water… but because they don’t replace the electrolytes that make water work properly.
At 13 Nutrition, we built our 13 Hydrating Electrolyte Tubs to support real hydration, better performance, improved recovery, gut health, and daily function — using science-backed ingredients without unnecessary sugars or fillers.
Here is your full guide:
What are electrolytes?
Electrolytes are minerals that carry an electrical charge when dissolved in water.
They regulate:
- Hydration
- Muscle contractions
- Nerve signaling
- Energy production
- Cognitive performance
- Recovery
- Blood pressure
- Cellular function
The main electrolytes your body relies on are:
Sodium
The primary electrolyte lost in sweat. Essential for hydration, fluid balance, nerve signaling, muscle contractions, and maintaining blood volume.
Potassium
Works alongside sodium to regulate hydration inside cells, support muscle contractions, and maintain proper nerve and heart function.
Magnesium
Critical for energy production, recovery, muscle relaxation, nervous system function, sleep quality, and hundreds of enzymatic reactions.
Without proper electrolyte balance, water alone cannot hydrate you effectively.
Why hydration is one of the biggest performance advantages
Even mild dehydration can negatively affect:
- Endurance
- Strength output
- Recovery
- Mental focus
- Energy levels
- Cramp prevention
- Sleep quality
- Cognitive performance
Many athletes think they are “tired” when they are actually:
- under-hydrated
- low in sodium
- low in potassium
- losing minerals faster than they replace them
This becomes even more important during:
- Running
- Cycling
- HYROX
- CrossFit
- Gym training
- Team sports
- Hot climates
- Long work days
- Travel
- Illness
- Alcohol intake
Why water alone is not enough
Water without electrolytes can actually dilute sodium levels in the body.
Your body needs electrolytes to:
- absorb water properly
- retain fluids
- move hydration into cells
- maintain blood plasma volume
- support muscular contractions
This is why people can drink large amounts of water and still feel:
- fatigued
- dizzy
- crampy
- flat
- dehydrated
Hydration is not just about intake.
It’s about absorption and retention.
The importance of the 1:1 sodium-to-potassium balance
One of the biggest mistakes in hydration today is consuming large amounts of sodium without enough potassium.
Sodium and potassium work together like a hydration pump.
Sodium pulls water into the bloodstream
Potassium helps move water into the cells
This balance is critical for:
- muscle contractions
- nerve signaling
- hydration efficiency
- endurance
- blood pressure regulation
- cramp prevention
- cognitive function
At 13 Nutrition, our Hydrating Electrolytes were designed with a near-balanced sodium-to-potassium approach to support:
- superior hydration
- improved cellular fluid balance
- better muscular performance
- smoother recovery
- reduced cramping
Instead of simply loading excessive sodium, we focused on creating smarter hydration.
Why sodium matters so much for athletes
Sodium is the primary electrolyte lost through sweat.
The average athlete can lose approximately:
- 450–550mg sodium
per - 500ml of sweat
This is why sodium replacement is essential during:
- long training sessions
- hot conditions
- endurance events
- high sweat-rate athletes
Low sodium can lead to:
- headaches
- fatigue
- reduced endurance
- dizziness
- cramps
- poor recovery
- decreased cognitive performance
Our hydration philosophy is built around replacing what athletes actually lose.
Why potassium is equally important
Potassium is often under-consumed in modern diets.
Yet it plays a massive role in:
- muscular contractions
- hydration inside cells
- recovery
- nervous system function
- reducing cramping
Potassium also helps balance the effects of sodium and supports smoother hydration throughout the body.
This is why combining sodium + potassium properly is one of the most effective hydration strategies for performance.
Why magnesium changes recovery
Magnesium is involved in over 300 biochemical reactions in the body.
It supports:
- ATP energy production
- muscular relaxation
- nervous system recovery
- sleep quality
- stress management
- reduced cramping
- muscle recovery
Athletes commonly lose magnesium through:
- sweating
- stress
- intense training
Low magnesium levels can contribute to:
- cramps
- fatigue
- poor sleep
- tension
- reduced recovery capacity
The hidden hydration secret: gut health & absorption
Hydration is not only about what you drink.
It’s also about what your gut can absorb.
That’s why our 13 Hydrating Electrolyte Tubs include Fibersol® — a clinically studied prebiotic fiber.
Why Fibersol® matters
Fibersol® helps support:
- gut health
- microbiome diversity
- digestive comfort
- smoother absorption
- improved mineral uptake
- stable digestion during training
A healthier gut may improve the body’s ability to:
- absorb electrolytes
- retain hydration
- tolerate endurance fueling
- support recovery
This is especially important for athletes who experience:
- bloating
- stomach distress
- poor digestion during exercise
- inconsistent hydration
Hydration starts in the gut.
Why our formula is different
Unlike many electrolyte products loaded with:
- sugar
- artificial colorants
- unnecessary fillers
- low mineral dosages
Our 13 Hydrating Electrolyte Tubs focus on:
- effective sodium replacement
- balanced potassium support
- magnesium for recovery
- coconut water powder
- Fibersol® prebiotic fiber
- zero sugar
- natural flavours & sweeteners
Designed for:
- performance
- recovery
- daily hydration
- gut support
- endurance
- cognitive performance
Who should use electrolytes?
Electrolytes are not only for elite athletes.
You may benefit from daily electrolyte support if you:
- train regularly
- sweat often
- drink caffeine
- consume alcohol
- work long hours
- travel frequently
- live in hot climates
- wake up dehydrated
- struggle with cramps or headaches
- feel flat during training
When should you take electrolytes?
Morning
You lose water and electrolytes overnight through breathing and sweating.
Before training
Start hydrated before performance drops.
During training
Especially during sessions longer than 45–60 minutes.
After training
Replace minerals lost through sweat and support recovery.
During travel
Flying and long travel increase dehydration.
After alcohol
Alcohol increases fluid and electrolyte loss.
Before bed
Can help support overnight hydration and reduce cramping.
What are signs you may be low on electrolytes?
Common symptoms include:
- headaches
- fatigue
- muscle cramps
- dizziness
- poor focus
- low energy
- nausea
- reduced endurance
- brain fog
- poor recovery
What is sweat rate?
Sweat rate refers to how much fluid you lose during exercise.
Knowing your sweat rate helps you personalize hydration.
Simple method:
- Weigh yourself before training
- Weigh yourself after training
- Add fluids consumed during training
- Calculate total losses
This helps determine:
- fluid needs
- sodium requirements
- race-day hydration strategy
Hydration is performance
The best athletes in the world no longer see hydration as optional.
It is one of the biggest factors influencing:
- endurance
- strength
- recovery
- cognition
- energy
- consistency
You can train hard.
But if hydration is poor, performance suffers.
13 Hydrating Electrolytes
Hydration designed for:
- athletes
- endurance training
- gym performance
- recovery
- daily health
- gut support
- real-world hydration
Featuring:
- sodium + potassium balance
- magnesium support
- Fibersol® prebiotic fiber
- coconut water powder
- natural flavours
- zero sugar
Hydration perfected for performance.
BUY IT NOW - https://13nutrition.co.za/products/hydrating-electrolytes