Estimate your sweat rate: New free tool!

Estimate your sweat rate: New free tool!

As a sports dietitian specialising in triathlon, one of the key elements I focus on with my clients is hydration strategy. Hydration plays a critical role in performance, and understanding your sweat rate is key to optimising your fluid intake.

Recently I was lucky enough to sit down with Lindsey Hunt, a senior sports scientist at Precision Fuel and Hydration, to discuss his work in this area and the great new tool that came from it. With an impressive academic background and hands-on research in human thermoregulation, Lindsey's insights are invaluable for athletes looking to fine-tune their hydration strategies.

Lindsey's research primarily focused on whole-body sweat rate prediction in both indoor and outdoor running and cycling. This involved numerous exercise trials with a broad cohort of participants to gather a comprehensive understanding of sweat rates across different conditions.

The culmination of this research is the sweat rate calculator, a free tool that helps you tailor your hydration strategy to meet your unique needs and perform at your best! It’s incredibly accurate, particularly indoors, where predictions were exceptionally close to actual measured sweat rates. Outdoors, the accuracy remained commendable, with predictions mostly within 400 millilitres per hour of actual measurements.

So, once you get your numbers, what do you actually do with this information?

Well, the way you use your sweat rate data depends on the specific event and environmental conditions you’re facing. Consider a 10k run as an example. Depending on the location and temperature, you might need only a minimal amount of fluid replacement to maintain performance and health.

However, for endurance events like a half marathon or longer, it's essential to replenish a substantial portion of the fluids lost through sweat. As the duration, intensity, and heat increase, so does the percentage of fluid replacement that is necessary.

However, it's critical to remember that the sweat rate calculator isn't a fluid replacement guide. You'll want to combine this data with your understanding of electrolyte needs, particularly salt intake, to avoid potential issues like hyponatremia during long duration events.

Key Takeaways for Triathletes:

  1. Know Your Sweat Rate: Before adjusting your fluid strategy, ensure you understand your sweat rate. This involves some trial and error during training sessions to find what works best for you.
  2. Consider Event Duration and Environment: The longer and hotter the event, the more aggressive your fluid replacement strategy should be. Don't fall into a one-size-fits-all approach; tailor it to the event specifics.
  3. Balance Fluid Intake with Your Needs: It’s not just about chugging water. Overhydration can be as detrimental as dehydration. Aim for a balanced intake that aligns with your calculated sweat rate.
  4. Plan Ahead: Use training sessions to test and perfect your hydration strategy, so on race day, you know exactly what your body requires.

Understanding your body’s sweat rate and how to manage it can prevent dehydration, reduce the likelihood of cramping, and overall optimise performance during your races. Stay hydrated and race smart!

LINKS:

Access The Sweat Rate Calculator: https://sweatratecalculator.com/

Check how well you’re doing when it comes to your nutrition with our 50 step checklist to Triathlon Nutrition Mastery: dietitianapproved.com/checklist

Start working on your nutrition now with my Triathlon Nutrition Kickstart course: dietitianapproved.com/kickstart

It’s for you if you’re a triathlete and you feel like you’ve got your training under control and you’re ready to layer in your nutrition. It's your warmup on the path to becoming a SUPERCHARGED triathlete – woohoo!

Join the waitlist for our next opening of the Triathlon Nutrition Academy www.dietitianapproved.com/academy

Website: www.dietitianapproved.com

Instagram: @Dietitian.Approved @triathlonnutritionacademy

Facebook: www.facebook.com/DietitianApproved

The Triathlon Nutrition Academy is a podcast by Dietitian Approved. All rights reserved. www.dietitianapproved.com/academy

See omnystudio.com/listener for privacy information.

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Creatine Gummies Exposed – 9 Brands Tested, Half Failed

Creatine Gummies Exposed – 9 Brands Tested, Half Failed

Are your creatine gummies actually doing anything? In this week’s episode, we reveal the results of independent lab testing on nine popular creatine gummy brands—and it's not pretty. Some delivered the goods, but others? Utterly useless. With creatine booming across social media and mainstream marketing, it’s easy to fall for fancy packaging. But as triathletes, we need performance—not candy. Here’s what you’ll learn: Why creatine gummies are having a moment Quick refresher: What is creatine and why use it? Who actually benefits from creatine (spoiler: not everyone) The shocking results of James Smith’s independent testing Which 5 brands failed and why The 4 that passed and delivered close to label claims How to spot a fake: 3 simple red flags The Aussie company leading the way with transparent batch testing Is there still a place for creatine gummies in sport? Links & Resources: James Smith Creatine Studies Listen to Episode 188 🏊‍♂️🚴‍♀️🏃‍♂️ Build your personalised triathlon fuelling plan inside the Triathlon Nutrition Academy. Download the FREE audio series The 5 Biggest Nutrition Mistakes Costing You Time on Race Day SUPPORT THE PODCAST HERE CONNECT WITH TARYN Website | Instagram | Facebook | YouTube The Triathlon Nutrition Academy® is a podcast by Dietitian Approved®. All rights reserved. See omnystudio.com/listener for privacy information.

4 Sep 14min

What It Takes to Fuel Your First Ironman

What It Takes to Fuel Your First Ironman

What It Takes to Fuel Your First Ironman with Steve Duquette Thinking about doing your first full Ironman? Don’t leave your performance to chance. In this episode, I’m joined by long-time TNA athlete Steve Duquette, who recently completed his first Ironman at Ironman Canada—and felt strong from start to finish. We dig into the practical nutrition strategies that gave him the confidence to go all in, and how he avoided common race-day disasters like cramps, GI issues and bonking. Whether you’re considering going long or already knee-deep in training, this episode will help you understand what it actually takes to fuel the training, execute a bulletproof race day strategy and enjoy the journey. In this episode we cover: Steve’s journey from cramping cyclist to confident Ironman finisher How nutrition gave him the confidence to step up to the full distance Key differences in fuelling 70.3 vs Ironman training What went wrong in training—and how he fixed it before race day The full race day strategy: carb loading, electrolytes, hydration and more Sweat testing, spreadsheets and how data built confidence Steve’s advice for anyone still winging it What he’d change next time and his goals for 2027 Links & Resources: 🏊‍♂️🚴‍♀️🏃‍♂️ Build your personalised triathlon fuelling plan inside the Triathlon Nutrition Academy. Download the FREE audio series The 5 Biggest Nutrition Mistakes Costing You Time on Race Day SUPPORT THE PODCAST HERE CONNECT WITH TARYN Website | Instagram | Facebook | YouTube The Triathlon Nutrition Academy® is a podcast by Dietitian Approved®. All rights reserved.See omnystudio.com/listener for privacy information.

28 Aug 28min

Why Sleep Is Your #1 Recovery Tool with Dr Michael Grandner

Why Sleep Is Your #1 Recovery Tool with Dr Michael Grandner

Struggling to recover despite solid training and nutrition? You might be missing the most powerful recovery tool of all — sleep. In this episode, I’m joined by Dr Michael Grandner, Director of the Sleep and Health Research Program at the University of Arizona and a world-leading expert in sleep science. We break down exactly why sleep matters so much for endurance athletes, what’s really going on when you miss sleep, and how to get better quality shut-eye — even when you’re training hard, managing work and juggling life. We cover: Why sleep is essential for adaptation and recovery — not just rest The truth about how much sleep triathletes actually need What to do if your sleep is disrupted or inconsistent Why wearables are helpful — but not the whole story Practical strategies to improve sleep tonight Links & Resources: Dive into Dr Grandners Research: Google Scholar Citations Connect with Dr Michael Grandner:WebsiteInstagram LinkedIn 🏊‍♂️🚴‍♀️🏃‍♂️ Build your personalised triathlon fuelling plan inside the Triathlon Nutrition Academy. Download the FREE audio series The 5 Biggest Nutrition Mistakes Costing You Time on Race Day SUPPORT THE PODCAST HERE CONNECT WITH TARYN Website | Instagram | Facebook | YouTube The Triathlon Nutrition Academy® is a podcast by Dietitian Approved®. All rights reserved. See omnystudio.com/listener for privacy information.

21 Aug 42min

Are You a Burnt-Out Triathlete? Answer These 3 Questions

Are You a Burnt-Out Triathlete? Answer These 3 Questions

Feeling flat, foggy or just can’t be bothered to train? Burnout doesn’t always come in hot with a meltdown and a for-sale bike post. Sometimes it’s the slow creep of fatigue, motivation dips and sugar cravings that chip away at your performance and love of the sport. In this episode, Taryn unpacks the 3 key questions every triathlete should ask themselves to figure out if they’re on the burnout train — and what to do if the answer is yes. What you’ll learn: Why this topic hits close to home for so many triathletes Question 1: Are you feeling flat all the time? The sneaky signs of under-fuelling you might be ignoring Question 2: What’s really happening after your sessions? Recovery nutrition mistakes that cost you more than you think Question 3: Hungry all the time or not at all? Here’s why that matters Real talk on what burnout looks like and how to fix it LINKS: Link to paper 🏊‍♂️🚴‍♀️🏃‍♂️ Build your personalised triathlon fuelling plan inside the Triathlon Nutrition Academy. Download the FREE audio series The 5 Biggest Nutrition Mistakes Costing You Time on Race Day SUPPORT THE PODCAST HERE CONNECT WITH TARYN Website | Instagram | Facebook | YouTube The Triathlon Nutrition Academy® is a podcast by Dietitian Approved®. All rights reserved. See omnystudio.com/listener for privacy information.

14 Aug 13min

Extra Virgin Olive Oil vs Ibuprofen – What the Science Says

Extra Virgin Olive Oil vs Ibuprofen – What the Science Says

Did you know the humble bottle of extra virgin olive oil in your pantry could be doing more than just making your salad taste good? In this episode, I’m unpacking a game-changing compound found in high quality EVOO – oleocanthal – which behaves just like ibuprofen. We’re talking natural anti-inflammatory power that can help reduce exercise-associated inflammation, support recovery and keep your immune system firing – without wrecking your gut or kidneys like NSAIDs can. You’ll learn: What oleocanthal is and why it’s like nature’s ibuprofen How to spot a good quality EVOO (not all are created equal) Why this simple pantry staple could be a secret weapon in your recovery strategy LINKS: Link to paper 🏊‍♂️🚴‍♀️🏃‍♂️ Build your personalised triathlon fuelling plan inside the Triathlon Nutrition Academy. Download the FREE audio series The 5 Biggest Nutrition Mistakes Costing You Time on Race Day SUPPORT THE PODCAST HERE CONNECT WITH TARYN Website | Instagram | Facebook | YouTube The Triathlon Nutrition Academy® is a podcast by Dietitian Approved®. All rights reserved.See omnystudio.com/listener for privacy information.

7 Aug 12min

200 Episodes In – Fuel Tactics That Made TNA Athletes Faster

200 Episodes In – Fuel Tactics That Made TNA Athletes Faster

Think you're eating right for triathlon but still underperforming? In this milestone 200th episode, the mic flips as four inspiring Triathlon Nutrition Academy athletes interview Taryn about the game-changing strategies that turned their training, racing and health around. From ditching the guesswork to losing 20kg, improving diabetes, and smashing PBs, this episode is packed with real stories of what's possible when your nutrition is dialled. Get a behind-the-scenes look at the philosophies behind the TNA program, why age-groupers should stop copying the pros, and what actually works when you're juggling training with work, family and life. If you're serious about improving performance, staying injury-free and fuelling smarter, not harder, this episode is a must-listen. LINKS: 🏊‍♂️🚴‍♀️🏃‍♂️ Build your personalised triathlon fuelling plan inside the Triathlon Nutrition Academy. Download the FREE audio series The 5 Biggest Nutrition Mistakes Costing You Time on Race Day SUPPORT THE PODCAST HERE CONNECT WITH TARYN Website | Instagram | Facebook | YouTube The Triathlon Nutrition Academy® is a podcast by Dietitian Approved®. All rights reserved.See omnystudio.com/listener for privacy information.

31 Juli 36min

Plant vs Animal Protein – Which Builds More Muscle?

Plant vs Animal Protein – Which Builds More Muscle?

Are plant-based proteins really good enough for triathletes chasing strength gains and performance? Or do animal proteins still reign supreme? In this episode, I dive into a brand-new systematic review comparing plant and animal proteins on muscle mass, strength and performance outcomes – and break down exactly what it means for you as a triathlete. You’ll get a no-fluff summary of the science, plus practical takeaways whether you're a carnivore, vegetarian or full vegan. Discover which protein sources really matter, how to optimise your intake for recovery and strength, and why you can’t out-supplement a lack of lifting. Reference: https://pubmed.ncbi.nlm.nih.gov/39813010/ LINKS: 🏊‍♂️🚴‍♀️🏃‍♂️ Build your personalised triathlon fuelling plan inside the Triathlon Nutrition Academy. Download the FREE audio series The 5 Biggest Nutrition Mistakes Costing You Time on Race Day SUPPORT THE PODCAST HERE CONNECT WITH TARYN Website | Instagram | Facebook | YouTube The Triathlon Nutrition Academy® is a podcast by Dietitian Approved®. All rights reserved.See omnystudio.com/listener for privacy information.

24 Juli 14min

Three Triathlon Nutrition Myths Costing You Performance – Stop Doing Them!

Three Triathlon Nutrition Myths Costing You Performance – Stop Doing Them!

Still chasing race weight? Skipping food before training to burn more fat? Meticulously tracking every calorie? In this week’s episode, I’m calling out the three biggest nutrition myths that are still messing with triathletes in 2025. If you’ve been feeling flat, frustrated or just not seeing the performance gains you expect—this one's for you. Learn why these outdated beliefs are holding you back and what to do instead, including: Why fuelling beats weight loss for real results When fasted training helps (and when it hurts) Why tracking calories isn’t the silver bullet LINKS: 🏊‍♂️🚴‍♀️🏃‍♂️ Build your personalised triathlon fuelling plan inside the Triathlon Nutrition Academy. Download the FREE audio series The 5 Biggest Nutrition Mistakes Costing You Time on Race Day SUPPORT THE PODCAST HERE CONNECT WITH TARYN Website | Instagram | Facebook | YouTube The Triathlon Nutrition Academy® is a podcast by Dietitian Approved®. All rights reserved. See omnystudio.com/listener for privacy information.

21 Juli 24min

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