Skip to content

Cart

Your cart is empty

CoreCtrl – Cooling System™

Support Your Performance in Hot Conditions

CoreCtrl™ is designed to support your body’s natural ability to handle hot conditions during training and competition. Developed with Olympic athletes and Informed-Sport certified, CoreCtrl™ combines high-dose L-Taurine with key electrolytes as part of a structured heat preparation routine.

Fact #01 CoreCtrl introduces a new category in endurance nutrition: internal preparation for hot conditions.
Fact #02 CoreCtrl is built around high-dose taurine plus supporting electrolytes and piperine.
Fact #03 CoreCtrl stacks with everything else you already do, and you can confidently take it for an event that may be warm.
# Sachets:
Developed with Olympians. Trusted daily by athletes worldwide
One time purchase
£28.95 -0%
Secure payment Visa Mastercard Generic PayPal Apple Pay Google Pay Klarna Bancontact
CoreCtrl – Cooling System™ truefuels Cooling System
Informed Sport zertifiziertDamen-Laufpreis60-Tage-Zufriedenheitsgarantie
Gluten Free
Informed Sports Certified
Winner Women's Running Awards 2025
Olympic Developed
Vegan Product
Informed Sports Logo
Gluten Free
Informed Sports Certified
Winner Women's Running Awards 2025
Olympic Developed
Vegan Product
Informed Sports Logo

Why CoreCtrl™ Matters

Core temperature is one of the most underestimated limiters in endurance sport. As heat rises, blood flow shifts away from working muscles to cool your body and pace drops. CoreCtrl is formulated to support your body's natural thermoregulation, helping you sustain output for longer in heat, humidity, and high-intensity conditions. Less heat stress. More time at threshold.

Facts

Fuelling stats
Why Hot Conditions Challenge Endurance Athletes

In warm and humid environments, your body faces increased demands to maintain performance. CoreCtrl™ is formulated to support your natural thermoregulatory processes and hydration balance when temperatures rise. Alistair Brownlee on Heat Acclimation

How CoreCtrl™ Helps You Stay in Control

CoreCtrl™ supports your body’s natural thermoregulatory response and hydration balance during prolonged effort in hot conditions. The formula combines a high dose of L-Taurine with key electrolytes (potassium, calcium, magnesium and sodium) to help you feel prepared and in control when racing or training in challenging heat. When Heat Takes Control

The 8-Day Hot Weather Protocol

A simple, structured 8-day routine designed to support your body ahead of hot weather events. Take one sachet daily for 8 days, with the final dose on race morning. Follow the clear daily guidance for best results.

Who Benefits Most from CoreCtrl™
  • Marathon and ultra runners facing warm race days
  • Triathletes and Ironman athletes competing in hot climates
  • HYROX and functional endurance competitors
  • Cyclists and outdoor athletes training in summer conditions

Nutritional Best Practices for Endurance Athletes

Choose your Race. Get your Protocol.

Pre-Race Protocol

8 days before 1x CoreCtrl sachet Daily.
30 min before 1x Electrolyte + 500ml water.
Pre-Start 1x Energy Gel

Race Protocol

Energy Gels
Every 30 min 2/h = 80g carbs/h
<18°C: Low-Salt >18°C: High-Salt
Hydration
150–250ml per Gel >18°C: 1x Electrolytes
Always pair hydration with electrolytes

Post-Race Protocol

Immediately after 1x Electrolyte + 500ml water.

Pre-Race Protocol

8 days before 1x CoreCtrl sachet Daily.
30 min before 1x Electrolyte + 500ml water.
Pre-Start 1x Energy Gel

Race Protocol

Energy Gels
Bike: every 20–25 min 2–3/h = 80–120g carb
Run: every 30 min 2/h = 80g carb
Always High-Salt
Hydration
400–800ml / hour >18°C: 1x Electrolytes
Always pair hydration with electrolytes

Post-Race Protocol

Immediately after 1x Electrolyte + 500ml hydration.

Pre-Race Protocol

8 days before 1x CoreCtrl sachet Daily.
30 min before 1x Electrolyte + 500ml water.
Pre-Start 1x Energy Gel

Race Protocol

Energy Gels
Bike: every 20–25 min 2–3/h = 80–120g carb
Run: every 30 min 2/h = 80g carb
Always High-Salt Supplement with on-course nutrition as needed
Hydration
500–900ml / hour Heavy sweaters: Electrolytes
Always pair hydration with electrolytes

Post-Race Protocol

Immediately after Replace 100–150% fluid lost. 1x Electrolyte + 500ml water.

Pre-Race Protocol

8 days before 1x CoreCtrl sachet Daily.
30 min before 1x Electrolyte + 500ml water.
Pre-Start 1x High-Salt Gel

Race Protocol

Energy Gels
Mid-race (~40 min) 1 Gel optional
Always High-Salt · 40g carbs · 1.0g salt
Hydration Sip at each station

Post-Race Protocol

Immediately after 1x Electrolyte + 500ml water.

The fuelling protocols above are general guidelines for informational purposes only. Individual requirements for fluid intake, carbohydrate consumption, and sodium replacement vary depending on body mass, training status, sweat rate, temperature, exercise intensity, gastrointestinal tolerance, and medical history. These protocols do not constitute medical or nutritional advice and are not a substitute for personalised guidance from a qualified sports dietitian or medical practitioner. To the fullest extent permitted by applicable law, Truefuels Ltd accepts no liability for any adverse effects arising from reliance on this information. By following these guidelines you do so entirely at your own risk. If you have a pre-existing medical condition or are taking medication, consult a qualified healthcare professional before following any nutrition or supplementation protocol.

Rated 4.8/5, daily by athletes and champions worldwide.

Loading reviews…

Join the Circle

Trusted daily by athletes worldwide.

Master your fueling

Science – Ester Blanco

The Body Learns: Adapting to Heat.

After experiencing how much heat could affect my performance in Athens, I arrived at my first sprint-distance triathlon in Cambrils with a very different mindset. It was June, temperatures were hig...

Read more →
The Body Learns: Adapting to Heat.
Science – Ester Blanco

From London Cool to Athens Heat: My Poseidon Half Marathon Experience

The Speed Read My first half marathon in the heat didn’t go exactly to plan, but it worked. I finished the Poseidon Half Marathon in Athens in 1:57 under conditions much warmer than anything I trai...

Read more →
From London Cool to Athens Heat: My Poseidon Half Marathon Experience
Alistair Brownlee

Taurine: The Secret Weapon for Conquering Heat in Endurance Sports?

          I bet you've already been there; maybe you were running on a hot day, cycling indoors or in a warm gym. Gradually, without you realising, the effort became harder. If you were wear...

Read more →
Taurine: The Secret Weapon for Conquering Heat in Endurance Sports?

Frequently Asked Questions

Disclaimer: Food supplement. Not intended to diagnose, treat, cure or prevent any disease.