Precision Hydration is an electrolyte system designed to replace sodium lost through sweat during endurance training and racing.

Products are labelled by sodium strength, allowing athletes to choose hydration based on how much sodium they lose, rather than relying on a single generic electrolyte drink.

This approach helps athletes hydrate more accurately, particularly during longer sessions, warmer conditions, or high sweat rates.

Sodium is the primary electrolyte lost in sweat and plays a key role in fluid absorption, nerve signalling, and muscle function. Replacing sodium appropriately helps support hydration, comfort, and performance during endurance exercise.

Because sodium loss varies widely between individuals, replacing too little or too much can both cause problems.

Precision Hydration focuses on matching intake to actual sweat loss rather than guessing.

The difference between Precision Hydration products is the amount of sodium provided per litre:

• PH 500 provides 500mg sodium per litre. Best suited to lighter sweaters, cooler conditions, or shorter sessions.
  
• PH 1000 provides 1000mg sodium per litre. Used by many endurance athletes for everyday training and racing.
  
• PH 1500 provides 1500mg sodium per litre. Designed for heavy or salty sweaters, long sessions, or hot conditions.
  

Choosing the right strength depends on individual sweat rate, sweat sodium concentration, and conditions.

Many athletes combine different formats within the same session.

Most athletes start with PH 1000, as it suits a wide range of endurance training and racing scenarios.

You may prefer:

• PH 500 if you sweat lightly or train in cool conditions
  
• PH 1000 for most long runs, rides, and races
  
• PH 1500 if you sweat heavily, notice salt marks on clothing, or struggle with cramps in warm conditions
  

Many athletes adjust strength depending on weather, duration, and intensity.

No. Precision Hydration products focus purely on electrolyte replacement, not energy.

Carbohydrate intake is managed separately using Precision Energy Gels or other fuel sources. This separation allows athletes to adjust hydration and fueling independently, which is especially useful when conditions or intensity change.

This makes them particularly suitable for long training sessions, races, and multi-hour endurance events.

Cramping can have multiple causes, but inadequate sodium intake is a common factor for some endurance athletes, particularly during long or hot sessions.

Replacing sodium appropriately through hydration can help reduce the risk of cramps related to electrolyte imbalance. Precision Hydration’s strength-based system makes it easier to match sodium intake to sweat loss.

Yes. Precision Hydration products are designed to be gentle on the stomach, using a straightforward formulation without unnecessary ingredients or strong flavours. Making them suitable for use over long durations and during hard efforts.

Precision Hydration products are used by professional and elite endurance athletes as well as serious amateurs.
Athletes associated with Precision Fuel & Hydration include Lucy Charles-Barclay, Sam Laidlow, and Kristian Blummenfelt, alongside competitors at the highest level of Ironman, triathlon, marathon running, and ultra-distance racing.

Yes. Precision Hydration products are suitable for vegans and are free from common allergens, including gluten, dairy, and soy.
As with any nutrition product, athletes with specific medical allergies should always check the ingredient list before use.