Asker Jeukendrup, PhD

Asker Jeukendrup, PhD

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Sports nutrition scientist; carbohydrate intake, fueling, and endurance performance.

Endurance Performance: Beyond Mileage, Intervals, and Carbs
SocialMay 7, 2026

Endurance Performance: Beyond Mileage, Intervals, and Carbs

Traditional endurance advice has often focused on mileage, intervals, and carbohydrate. But is that the full picture? Join Dr Mike Ormsbee for Endurance Reimagined, an expert lecture on the latest science in endurance performance. https://t.co/5Zy1jrLXXW

By Asker Jeukendrup, PhD
Caffeine Boosts Carb Absorption, Enhances Endurance Performance
SocialMay 6, 2026

Caffeine Boosts Carb Absorption, Enhances Endurance Performance

Carbohydrates and caffeine are often consumed to improve endurance performance. Can caffeine increase the absorption of carbohydrates during exercise? If so, what does this mean for performance? Read the blog for more: https://t.co/tI4zx8NQXp https://t.co/gqJ47oCKaM

By Asker Jeukendrup, PhD
Sweat Sodium Varies Beyond Salt Intake: Diet, Rate, Acclimation
SocialMay 5, 2026

Sweat Sodium Varies Beyond Salt Intake: Diet, Rate, Acclimation

Is the sodium in your sweat simply a reflection of how much salt you eat? This blog explores why sweat sodium concentrations vary between and within individuals, and how factors such as diet, sweat rate and heat acclimation influence losses....

By Asker Jeukendrup, PhD
Last Call: Masterclass on Protein for Recovery Tomorrow
SocialMay 5, 2026

Last Call: Masterclass on Protein for Recovery Tomorrow

LAST CHANCE to register https://t.co/X2jF4hM5UH This masterclass TOMORROW examines where protein fits into recovery and adaptation. https://t.co/fVrLDj1GGL

By Asker Jeukendrup, PhD
Evidence‑Based Comparison of Animal, Plant, and Alternative Proteins
SocialMay 4, 2026

Evidence‑Based Comparison of Animal, Plant, and Alternative Proteins

Compare animal, plant, and alternative proteins through an evidence based lens and apply practical, evidence based advise. Nearly sold out: https://t.co/X2jF4hM5UH https://t.co/AVKSuO8oyi

By Asker Jeukendrup, PhD
Animal and Plant Proteins Both
SocialMay 4, 2026

Animal and Plant Proteins Both

Do proteins from dairy, meat, and plant sources differ in their capacity to promote muscle growth during resistance exercise training? And if so, which is best? Read the blog: https://t.co/kVK8kDSPba https://t.co/QbtVFreN0S

By Asker Jeukendrup, PhD
Sodium's Performance Boost: Limited Evidence Beyond Hydration
SocialMay 3, 2026

Sodium's Performance Boost: Limited Evidence Beyond Hydration

Sodium is often promoted as a performance enhancer, but what does the evidence say? This blog reviews the limited research on sodium intake during exercise and questions whether it improves performance beyond supporting hydration. Click here: https://t.co/ekABuKBMDR https://t.co/B5SZbA1psH

By Asker Jeukendrup, PhD
Sugar: Not All Bad—Boosts Performance When Used Strategically
SocialMay 3, 2026

Sugar: Not All Bad—Boosts Performance When Used Strategically

Sugar is often labelled as “bad” for health, but it’s also promoted as beneficial for athletes during exercise. This blog examines the evidence to answer the key question: is sugar actually harmful or helpful for athletic performance? https://t.co/eyhnVny8Am https://t.co/Ogq9bDJbXg

By Asker Jeukendrup, PhD
Protein Quality Determines Muscle Growth Efficiency
SocialMay 2, 2026

Protein Quality Determines Muscle Growth Efficiency

What exactly does protein quality mean? And what makes a protein source high quality compared to low? Find out what factors influence muscle response to protein intake. Read the blog: https://t.co/4BsMILsT68 https://t.co/BepHS8d2mW

By Asker Jeukendrup, PhD
Evidence Lacking for Menstrual Cycle‑Based Training Plans
SocialMay 2, 2026

Evidence Lacking for Menstrual Cycle‑Based Training Plans

We often see bold training recommendations for female athletes, but is the science there yet? In this blog, we ask the question: Do we actually have enough evidence to tailor training to menstrual-cycle phases? Start reading now: https://t.co/Jn456GIACE

By Asker Jeukendrup, PhD
Protein Powers Recovery, Adaptation, and Performance, Not Just Hypertrophy
SocialMay 1, 2026

Protein Powers Recovery, Adaptation, and Performance, Not Just Hypertrophy

Protein is often framed around hypertrophy, but its role is broader. Explore evidence based advice on protein use for recovery, adaptation, and performance in this 2H masterclass with Dr Oliver Witard. https://t.co/X2jF4hM5UH https://t.co/a9kpTqLyQH

By Asker Jeukendrup, PhD
AI Excels at Data, but Can’t Replace Human Coaching
SocialMay 1, 2026

AI Excels at Data, but Can’t Replace Human Coaching

Will AI replace sports practitioners? When software can automatically generate fuelling plans, detect performance trends in seconds, it becomes natural to wonder where the human expert fits in. In this blog we discuss what AI does exceptionally well, and what...

By Asker Jeukendrup, PhD
How Sugar Fuels Muscles and Becomes CO₂
SocialMay 1, 2026

How Sugar Fuels Muscles and Becomes CO₂

This blog examines the role of sugar in energy provision. It outlines key biochemical steps, differences between various sugars, and the pathway from carbohydrate intake to its use in muscle and eventual conversion to carbon dioxide. https://t.co/VlAVmqo10d https://t.co/BuINANiHfC

By Asker Jeukendrup, PhD
UCI Paper Reveals How Nutrition Drives WorldTour Cycling Performance
SocialMay 1, 2026

UCI Paper Reveals How Nutrition Drives WorldTour Cycling Performance

The UCI Sports Nutrition Project paper provides one of the most comprehensive overviews of race nutrition in professional road cycling to date. This blog summarises the key insights and how nutrition science is applied in WorldTour cycling: https://t.co/xmL5ZhgcwM https://t.co/dBgaLhy5cI

By Asker Jeukendrup, PhD
Nighttime Protein Aids Recovery without Causing Fat
SocialApr 30, 2026

Nighttime Protein Aids Recovery without Causing Fat

Eating protein before bed does not automatically lead to fat gain. This blog explains how it can support recovery and muscle health. Read the blog: https://t.co/z3MoMcBdza

By Asker Jeukendrup, PhD
Does Timing Matter? Anabolic Window Explored
SocialApr 30, 2026

Does Timing Matter? Anabolic Window Explored

This webinar reviews the anabolic window and asks what timing adds beyond total daily intake. Register now with the special offer https://t.co/X2jF4hM5UH https://t.co/q8UlgLjNAA

By Asker Jeukendrup, PhD
Collagen's Role in Muscle Connective Tissue Remains Unclear
SocialApr 29, 2026

Collagen's Role in Muscle Connective Tissue Remains Unclear

Does collagen strengthen connective tissue in muscle? Protein ingestion can increase the synthesis of contractile proteins, but does the same hold true for connective proteins? https://t.co/aILPHHpxW8 https://t.co/cXaNXCS3vl

By Asker Jeukendrup, PhD
Avoid the 3 Common Marathon Runner Mistakes
SocialApr 29, 2026

Avoid the 3 Common Marathon Runner Mistakes

Learn about the 3 most common mistakes by marathon runners and how to avoid them. Read the blog for practical advice: https://t.co/2rJ11lGXXg https://t.co/vQkq7CtALF

By Asker Jeukendrup, PhD
Protein & Strength: Boost Endurance Performance
SocialApr 29, 2026

Protein & Strength: Boost Endurance Performance

Do endurance athletes need protein supplements? Can strength training improve endurance performance? Join Endurance Reimagined webinar GOING LIVE TODAY. Very last chance to register: https://t.co/GmddIZjx4L https://t.co/cZXAkRP2SY

By Asker Jeukendrup, PhD
Cycling L'Etape Du Tour for Prostate Cancer Awareness
SocialApr 28, 2026

Cycling L'Etape Du Tour for Prostate Cancer Awareness

In July I will be riding the L'Etape du Tour 2026 for Prostate Cancer UK 🚴. I would appreciate it if you support the good cause: https://t.co/eBe6LY5YS6 https://t.co/7d8Yqnd5oz

By Asker Jeukendrup, PhD
Maximize Performance: New Evidence on Effective Protein Use
SocialApr 27, 2026

Maximize Performance: New Evidence on Effective Protein Use

In just 2H, you will hear the latest evidence and practical advice on how to use protein more effectively to support performance, recovery, and adaptation. https://t.co/WS0lKR4LJ5 https://t.co/bLzGTuyAT7

By Asker Jeukendrup, PhD
Optimal Pre‑Endurance Fueling: Carbs, Caffeine, Beetroot, More
SocialApr 27, 2026

Optimal Pre‑Endurance Fueling: Carbs, Caffeine, Beetroot, More

Learn how to fuel before endurance exercise, covering carbohydrate, protein, fat, caffeine, beetroot juice, and modified starches, and how these choices may influence metabolism, performance, and GI comfort. Register now: https://t.co/M9OVSMRDUs https://t.co/Q0yw8My4dH

By Asker Jeukendrup, PhD
Optimal Pre‑Race Meals and In‑Race Fuel Guide
SocialApr 26, 2026

Optimal Pre‑Race Meals and In‑Race Fuel Guide

Learn about what should you eat the day before, or the morning of the marathon, and what drinks, gels and solids you should take during the marathon, and how often. https://t.co/WwgsaMEARa https://t.co/WMIxz9BF77

By Asker Jeukendrup, PhD
Sodium's Role in Boosting Endurance Performance Explained
SocialApr 25, 2026

Sodium's Role in Boosting Endurance Performance Explained

Could sodium intake influence endurance performance? Explore the science in our lecture with Dr Alan McCubbin, now available with supporting learning materials. 20% off with code: sodium https://t.co/w1wzklTgyn https://t.co/BSntORLKB9

By Asker Jeukendrup, PhD
Most Athletes Don't Need Extra Electrolytes, Study Shows
SocialApr 25, 2026

Most Athletes Don't Need Extra Electrolytes, Study Shows

Electrolytes are heavily marketed to athletes, but does the science support the hype? This blog examines sodium’s role in hydration, why most athletes do not need targeted replacement, and when it may matter in very long events. Click here: https://t.co/Vsibe6dOrB...

By Asker Jeukendrup, PhD
Do Pre‑Workout Supplements Really Work? Find Out
SocialApr 25, 2026

Do Pre‑Workout Supplements Really Work? Find Out

Pre-workout supplements: which ones are the best? Or perhaps more importantly, do they work, and are they necessary? Read the blog for more: https://t.co/CcgZh7r5zN https://t.co/cIsqvrgF6r

By Asker Jeukendrup, PhD
Sodium May Boost Exercise Performance—Evidence Reviewed
SocialApr 24, 2026

Sodium May Boost Exercise Performance—Evidence Reviewed

If sodium plays an important role during exercise, then it makes sense that sodium would help performance. But does the evidence support this? Read the blog for more: https://t.co/GHvinkuz9T https://t.co/HDjW2m8z9e

By Asker Jeukendrup, PhD
Rethink Endurance Performance with Modern Evidence-Based Insights
SocialApr 24, 2026

Rethink Endurance Performance with Modern Evidence-Based Insights

This webinar is about rethinking endurance performance through a broader, more modern, and more evidence-based lens. Join the session: https://t.co/FHjGFZjzbF https://t.co/BIJlBQcDUF

By Asker Jeukendrup, PhD
Modified Starch Boosts Fat Burn, Stabilizes Glucose, Risks Gut
SocialApr 23, 2026

Modified Starch Boosts Fat Burn, Stabilizes Glucose, Risks Gut

Hydrothermally modified starch supplements may boost fat oxidation & stabilize blood glucose during exercise. But, slow absorption might upset your gut. Read more: https://t.co/Qb9hepjbPa https://t.co/NoOaX6lDJK

By Asker Jeukendrup, PhD
AI Excels at Data, Not Human Coaching Insight
SocialApr 23, 2026

AI Excels at Data, Not Human Coaching Insight

Will AI replace sports practitioners? When software can automatically generate fuelling plans, detect performance trends in seconds, it becomes natural to wonder where the human expert fits in. In this blog we discuss what AI does exceptionally well, and what...

By Asker Jeukendrup, PhD
Clarify Repeated Protein Targets in Evidence-Based Session
SocialApr 23, 2026

Clarify Repeated Protein Targets in Evidence-Based Session

Protein targets are often repeated without enough context. Join an evidence based session with Dr Oliver Witard for clarity: https://t.co/EZNW868zPQ https://t.co/Zr8B5AIEST

By Asker Jeukendrup, PhD
Understanding CGM: What It Measures and Its Accuracy in Sports
SocialApr 22, 2026

Understanding CGM: What It Measures and Its Accuracy in Sports

There are many questions around the use of CGM in sport. What does CGM measure? How accurate is it? What can it tell us? etc. In this blog, Professor Michael Riddell and I provide an overview of CGM. Read here: https://t.co/shkcDJqVnW...

By Asker Jeukendrup, PhD
Protein’s Key Role in Recovery, Adaptation, and Performance
SocialApr 22, 2026

Protein’s Key Role in Recovery, Adaptation, and Performance

Explore the role of protein in recovery, adaptation, and performance. Seats are limited. Secure yours https://t.co/X2jF4hM5UH https://t.co/QuGS01HAgC

By Asker Jeukendrup, PhD
Oxygenated Water Boosts Cycling Performance, Study Shows
SocialApr 22, 2026

Oxygenated Water Boosts Cycling Performance, Study Shows

Can oxygenated water improve athletic performance? In this blog, Dr Nick Tiller and I discuss findings from a study showing oxygenated water improves cycling performance... Read here: https://t.co/pqgFyUWJSv https://t.co/qNDIecK4Pj

By Asker Jeukendrup, PhD
Protein and Strength Training Boost Endurance Performance
SocialApr 21, 2026

Protein and Strength Training Boost Endurance Performance

Dr Mike Ormsbee will discuss why protein intake and strength training may deserve more attention in endurance sport: https://t.co/eJsRhTCgt2 https://t.co/TxUrrObju8

By Asker Jeukendrup, PhD
Tailoring Nutrient Chemistry to Boost Exercise Performance
SocialApr 21, 2026

Tailoring Nutrient Chemistry to Boost Exercise Performance

What if we could modify the chemical structure of nutrients to alter their digestion, absorption, and metabolic effects during exercise? Could this enhance performance? https://t.co/nEZAItsKo4 https://t.co/Xn7h1zbXwU

By Asker Jeukendrup, PhD
Apple Cider Vinegar: Myth or Weight‑Loss Reality?
SocialApr 20, 2026

Apple Cider Vinegar: Myth or Weight‑Loss Reality?

In recent years, vinegar, and in particular apple cider vinegar, has been hailed and promoted for its weight loss properties. Is there some truth in these claims? Read the blog to find out more: https://t.co/pDA85IH7fx https://t.co/VPQGqKJUw0

By Asker Jeukendrup, PhD
Protein and Strength Training Boost Endurance Performance
SocialApr 20, 2026

Protein and Strength Training Boost Endurance Performance

Explore why protein intake and strength training may deserve more attention in endurance sport, particularly in relation to adaptation, resilience, efficiency, and long term performance. LAST CHANCE to register with 40% off: https://t.co/UXBWDt3JIP https://t.co/WpmoCPKIAH

By Asker Jeukendrup, PhD
Protein Isn’t Essential with Carbs During Workouts
SocialApr 20, 2026

Protein Isn’t Essential with Carbs During Workouts

Do I need to take protein with my carbohydrate during exercise? We are all aware of drinks and the gels that are commercially available as carbohydrate sources. But should we be thinking of protein as well? Read the blog for...

By Asker Jeukendrup, PhD
CGM Can't Accurately Predict Endurance Fuel Needs
SocialApr 19, 2026

CGM Can't Accurately Predict Endurance Fuel Needs

Continuous glucose monitoring (CGM) is increasingly used in sport, but can it tell athletes how much fuel is left in the tank? This blog explores whether CGM can provide meaningful guidance on fuelling strategies for endurance performance. Click here: https://t.co/j4V3cTKttl...

By Asker Jeukendrup, PhD
Bedtime Protein Boosts Recovery without Adding Fat
SocialApr 19, 2026

Bedtime Protein Boosts Recovery without Adding Fat

Eating protein before bed does not automatically lead to fat gain. This blog explains how it can support recovery and muscle health. Read the blog: https://t.co/z3MoMcBdza

By Asker Jeukendrup, PhD
Supplements Offer Small Endurance Gains, Unclear Adaptation Benefits
SocialApr 18, 2026

Supplements Offer Small Endurance Gains, Unclear Adaptation Benefits

Supplements like sodium bicarbonate, beta-alanine, beetroot juice, and caffeine can boost endurance by ~1-3%. What about their impact on adaptation? Read the blog: https://t.co/nOvClAp15h https://t.co/R0OaDs8m92

By Asker Jeukendrup, PhD
Extreme Glycogen Loading Can Accelerate Breakdown, Not Boost Performance
SocialApr 18, 2026

Extreme Glycogen Loading Can Accelerate Breakdown, Not Boost Performance

Is it necessary to follow an extreme glycogen loading protocol? Or will you simply accelerate glycogen breakdown? Read the blog to find out: https://t.co/4tRxNEPTAA https://t.co/Grta1nNNWy

By Asker Jeukendrup, PhD
Pre‑Sleep Nutrition Boosts Muscle Recovery and Next‑Day Performance
SocialApr 18, 2026

Pre‑Sleep Nutrition Boosts Muscle Recovery and Next‑Day Performance

In this live webinar, we will explore whether pre sleep nutrition can affect muscle protein synthesis, glycogen restoration, sleep, body composition, and next day readiness. Find out more: https://t.co/UXBWDt3JIP https://t.co/7uocd3yDXB

By Asker Jeukendrup, PhD
Optimize Performance: Pre‑Exercise, Sleep Nutrition, and Recovery
SocialApr 17, 2026

Optimize Performance: Pre‑Exercise, Sleep Nutrition, and Recovery

Dr Ormsbee will explore: - pre exercise fuelling - pre sleep nutrition - recovery and muscle protein synthesis - glycogen restoration Register here using the early-bird offer: https://t.co/Fg2QSJQ4dC https://t.co/kv7TV7NFxW

By Asker Jeukendrup, PhD
When Diet Fails: Iron Infusions for Athletes
SocialApr 17, 2026

When Diet Fails: Iron Infusions for Athletes

Iron deficiency is common among athletes. Under certain scenarios, diet and supplementation may not be sufficient. This blog describes scenarios where iron infusion or injection may be an appropriate treatment option https://t.co/1ybdvV0t1g https://t.co/GQJ8YmacvU

By Asker Jeukendrup, PhD
Rethink Endurance Performance with Modern Evidence-Based Strategies
SocialApr 16, 2026

Rethink Endurance Performance with Modern Evidence-Based Strategies

This webinar is about rethinking endurance performance through a broader, more modern, and more evidence-based lens. Join the session with 40% off: https://t.co/FHjGFZjzbF https://t.co/ebr1vO0CYR

By Asker Jeukendrup, PhD
Most Athletes Don't Need Extra Electrolyte Supplements
SocialApr 15, 2026

Most Athletes Don't Need Extra Electrolyte Supplements

Electrolytes are heavily marketed to athletes, especially those who notice salty sweat marks during exercise. But do all athletes really need supplements? This blog examines the evidence behind electrolyte use and common claims. Click here: https://t.co/XeKRTTyRpo https://t.co/zX1GrHLJU8

By Asker Jeukendrup, PhD
AI Excels at Data, but Can’t Replace Human Coaches
SocialApr 15, 2026

AI Excels at Data, but Can’t Replace Human Coaches

Will AI replace sports practitioners? When software can automatically generate fuelling plans, detect performance trends in seconds, it becomes natural to wonder where the human expert fits in. In this blog we discuss what AI does exceptionally well, and what...

By Asker Jeukendrup, PhD