💡 Fuel For Thought

If training is just about suffering, you're missing the point

In recent weeks, I’ve come across a couple of posts that genuinely worried me. One was a CNN headline about a reporter completing a six-day hike on just 250 calories per day. Another was a runner openly endorsing underfuelling as a way to toughen up for marathon training.

I get why these stories gain traction. As endurance athletes, we’re wired to respect grit. Pushing through discomfort is part of the sport’s appeal and a critical factor in finding new limits. But there’s an important line that often gets blurred: stress that drives adaptation is not the same as stress that erodes health and performance.

Physiologically, yes, change requires pressure. Training works because it creates a stimulus that the body adapts to when it’s given the resources to recover. That’s the key part many of these narratives leave out. Without adequate energy, your body doesn’t adapt, it simply survives. Hormones downregulate. Bone turnover slows. Immune function dips. Recovery stalls. Performance falls.

Withholding fuel doesn’t make training more effective, it narrows the ceiling of what you can handle. When energy intake matches the work you’re asking your body to do, you’re creating the conditions to push further, more consistently, and with less collateral damage along the way.

The goal of training isn’t to prove how tough you are, it’s to create adaptation. And adaptation only happens when stress is matched with sufficient fuel, rest, and care. Pushing your limits isn’t about seeing how little you can get by on. It’s about giving your body the support it needs to handle work you once thought was out of reach.

🚀 Endurance Highlights

1️⃣ A helpful tool to train safely in hot conditions

While training in the heat can promote certain training adaptations, it’s also important to approach it safely and intentionally. This recent work from Sports Medicine Australia highlights that heat stress is a major and often underestimated risk in community and recreational sport, especially during training and events held in hot, dry or hot, humid conditions. Heat illness doesn’t just affect performance; it can lead to nausea, dizziness, collapse, and in severe cases, serious medical emergencies.

To better manage this risk, Sports Medicine Australia has updated its Extreme Heat Policy and Guidelines and developed a free, easy-to-use online heat risk tool. The tool uses real-time and forecast weather data, along with sport-specific factors such as activity intensity, clothing, and expected duration, to estimate heat stress risk across over 30 sports and provides recommendations from hydration and clothing changes, to rest breaks, active cooling strategies, or when it’s safest to modify or suspend activity altogether.

👉 Check out the tool here. ​

2️⃣ The science behind a record-eligible sub-2-hour marathon

Beyond superior fitness, running a marathon in under two hours requires the perfect alignment of many factors. This review brings together what we now know about the physiological, technological, cognitive, and environmental determinants needed to achieve a record-eligible sub-2-hour marathon.

The paper highlights how recent breakthroughs have come from optimising multiple systems simultaneously. Advances in shoe technology have improved running economy, while controlled pacing strategies, drafting, and ideal environmental conditions reduce energetic cost. Nutrition and hydration strategies play a critical role in maintaining carbohydrate availability and delaying fatigue, and psychological factors, such as decision-making, focus, and pain tolerance, are increasingly recognised as performance limiters at this level.

The sub-2-hour marathon is framed as the outcome of carefully engineered integration, where small gains across physiology, technology, environment, and mindset combine to unlock extraordinary performance.

Together, this framework reinforces an important lesson for all endurance athletes: performance breakthroughs rarely come from a single variable. Sustainable progress is built by aligning training, fuelling, recovery, equipment, and race execution, each supporting the others to allow athletes to express their full potential on race day.

🕵🏻‍♀️ Retail Finds*

This week's product review: Kodiak Power Cakes - Pancake & Waffle Mix

Features & benefits

• Facts per serve (63g dry mix): 263 kcal, 32.5g carb, 18.1g protein, 3.5g fat and 504 mg sodium
• Simply mix with water or milk and cook.
• Nice and fluffy
• More protein and less sugar compared to regular pancakes.

Things to keep in mind

• Not gluten-free or vegan-friendly.

Final take

These pancakes can be a good option for a quick and balanced breakfast or even a potential addition to race nutrition if you want a high-carb, high-protein option. ​​

👩🏻‍🍳 Kitchen Creations

​Download the recipe​​​

Air Fryer Glazed Chicken Thighs with Bok Choy Here's a quick and tasty balanced option if you want to add a different flavour to your regular rice, chicken & veggie mix.

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Happy fuelling!

Gaby | Endurance Nutrition Specialist

🏃🏻‍♂️ Want to work together?

When you’re ready, here are 3 ways I can help you:

1. ​Take the FREE Endurance Nutrition Audit. Not sure if your fuelling strategy is working? This quick 3-minute audit will reveal exactly where you stand and what adjustments could help you perform at your best.
2. ​Book a FREE strategy call. Need expert advice on your next best step? Let’s chat! In this commitment-free call, I’ll help you identify key areas to improve and map out a fueling approach tailored to your endurance goals.
3. ​Join the Fuel To Thrive Academy. Ready to take action? My signature program gives you the ultimate fuelling roadmap to unlock your full potential in sport and life, with proven strategies that have helped endurance athletes fuel smarter, perform better and break records.