





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.
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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
Why this formula?
During exercise, around 75–80% of the energy your body produces becomes heat. When your body can't release that heat fast enough, your performance drops, not because you're unfit, but because your physiology has built-in limits to protect you. CoreCtrl is built to help push those limits back. The formula supports your body's ability to start sweating earlier, cool more efficiently, and build up less internal heat over a long effort in warm conditions. The key active ingredient, L-Taurine at 4,000mg, needs to be taken daily for 8 days before an event to reach the levels where it has a real impact. This is preparation, not a quick fix. The result is more control when heat would normally be the thing that slows you down.
Who is this for?
For endurance athletes who train or race in heat and have felt it cost them, a pace that falls apart in the second half of a hot run, cramping on the bike in warm weather, or that depleted feeling after high-intensity sessions in the heat. If heat has been the limiting factor rather than fitness, CoreCtrl was built for that. Triathletes, marathon runners, and cyclists who take race preparation seriously and want to be ready for whatever conditions the day brings.
Quality Ingredients
Six ingredients, each playing a specific role in helping your body handle heat.
L-Taurine (4,000mg)
The main active ingredient, at a high, evidence-based dose. Helps your body start sweating sooner, balance fluid inside your cells under heat, and slow the rise in core temperature that limits performance. The 8-day protocol lets it build up to effective levels in your body.
Potassium (300mg)
Sweat depletes potassium quickly in heat. Keeping it topped up means your muscles contract properly and fatigue builds more slowly.
Calcium (120mg)
Your muscles need calcium to contract. Heat can interfere with how your body uses it, contributing to early fatigue, included to keep that in check.
Magnesium (60mg)
Works alongside calcium and potassium to keep muscles and the nervous system firing normally as temperature and effort increase.
Himalayan Rock Salt
Sodium is what you lose most through sweat. Included to support the electrolyte base the rest of the formula depends on throughout the protocol.
Black Pepper Extract
Contains piperine, which slows down how quickly your body breaks down the active ingredients. Not here for its own effect, it makes the rest of the formula work better.
Ingredients: L-Taurine 4,000mg, Potassium 300mg, Calcium 120mg, Magnesium 60mg, Himalayan Rock Salt, Black Pepper Extract
Nutritional Information
| Per 100g | Per Serving | |
|---|---|---|
| Energy | 62 kJ / 15 kcal | 5 kJ / 1 kcal |
| Carbohydrate | 3.5 g | 0.3 g |
| of which sugars | 3.3 g | 0.3 g |
| Fat | 0 g | 0 g |
| Protein | 0 g | 0 g |
| Fibre | 0 g | 0 g |
| Salt | 3.4 g | 0.26 g |

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
Choose your Race. Get your Protocol.
Pre-Race Protocol
Race Protocol
Post-Race Protocol
Pre-Race Protocol
Race Protocol
Post-Race Protocol
Pre-Race Protocol
Race Protocol
Post-Race Protocol
Pre-Race Protocol
Race Protocol
Post-Race Protocol
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.
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Frequently Asked Questions
CoreCtrl™ is designed to support your body’s natural response when training or competing in warm conditions (typically above 15°C). It can be beneficial even when there is only a chance that conditions may be warm.
Individual responses vary. Many athletes find that CoreCtrl™ supports an increased sweat response in warm conditions. As a general guide, most people benefit from replacing additional fluid and electrolytes (approximately 20% more than usual). We strongly recommend testing your own response during training before using it in a major event.
Yes. While the core research protocol used an 8-day loading period, many athletes take it for longer. Benefits may continue to build with extended use, though long-term studies are limited. If taking it continuously for 24 days or more, we suggest taking a short break (around one week) before restarting. For multi-day events, take it for the 8 days leading up to the event and then each morning during the event.
CoreCtrl™ supports your body’s natural thermoregulatory processes and hydration balance during exercise in warm environments.
A structured routine to be used in the 8 days leading up to hot weather events. Take one serving daily, with the final dose on the morning before the event.
For athletes under 60 kg: Use a 2-day-on, 1-day-off pattern. This extends the total protocol to 12 days, with the final dose still taken on the morning before the event. Full details are provided with the product.
Yes. It combines high-dose L-Taurine with potassium, magnesium, calcium, and sodium to support hydration balance and muscle function in warm conditions. Why Electrolytes Matter in Endurance Performance
Endurance athletes and anyone who trains or competes in hot or humid conditions, including marathon running, triathlon, HYROX, and cycling.
Yes. CoreCtrl™ is designed to complement your normal electrolytes, gels, and hydration strategy.
Yes. Every batch is tested and certified.
Yes. The formula is informed by research on taurine supplementation in hot conditions, including the work of Peel et al. (2024).
We offer a 60-day money-back guarantee if you are not satisfied.
Disclaimer: Food supplement. Not intended to diagnose, treat, cure or prevent any disease.




