Osmolarity of sports drinks: the parameter no one explains
The osmolarity of an energy drink is the parameter that determines whether the stomach allows it to pass quickly or blocks it. The majority of commercial sports drinks are formu...
The Pyrene calculator
Your fuel, calculated for your effort.
An easy ride, a race, an ultra: whatever your goal, we help you fuel your effort properly. Enter your discipline, your duration and your conditions, and our visual tool turns your needs into a clear protocol: which flasks and bottles to fill, with what, and at which point in the race. No more dosage headaches: you see everything, all that's left is to ride.
Build my protocolExample: Cycling · 3 hrs · moderate
80 g/hcarbs
750 mL/hhydration
800 mg/hsodium
Merged Protocol energy & hydration combined
100 g
75 g
75 g
123
T0 · 0 hT0 +1 hT0 +2 h
Bottle · 750 mL
Carbs4 DrinkMix scoops
Electrolytes½ Hydratation dose
Bottle · 750 mL
Carbs3 DrinkMix scoops
Electrolytes½ Hydratation dose
Bottle · 750 mL
Carbs3 DrinkMix scoops
Electrolytes½ Hydratation dose
Effort intensity → carbohydrate needs
80g of carbs / hour
80 g
StartMid-raceFinish
The starting point
The whole system, in one pack.
The Discovery Pack brings together the essentials of the Pyrène range to test, compare and find your protocol.
- 1 UltraEndurance® Gel, Neutral
- 1 UltraEndurance® Gel, Organic Blueberry
- 1 UltraEndurance® DrinkMix, Neutral
- 1 Hydratation® Lime