Dr Cailbhe Doherty

@UCxet-B3eDU6naEo68SbnMMA - 12.4K subscribers

Science-based insights on performance, recovery, and wearable tech. Long-form videos 1 x month.

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The Most Misunderstood Concept in Endurance Training

The Most Misunderstood Concept in Endurance Training Dr Cailbhe Doherty

8.4K views - 3 weeks ago

AirPods Pro 3: Heart Rate Accuracy (Tested for Running)

AirPods Pro 3: Heart Rate Accuracy (Tested for Running) Dr Cailbhe Doherty

1.2K views - 1 month ago

What Actually Limits Human Endurance?

What Actually Limits Human Endurance? Dr Cailbhe Doherty

27K views - 2 months ago

Why Marathon Runners Hit the Wall | The Nutrition Science of Endurance

Why Marathon Runners Hit the Wall | The Nutrition Science of Endurance Dr Cailbhe Doherty

33K views - 3 months ago

Do Wearables Actually Improve Performance?

Do Wearables Actually Improve Performance? Dr Cailbhe Doherty

22K views - 3 months ago

The Science of Marathon Training: What Actually Predicts Performance

The Science of Marathon Training: What Actually Predicts Performance Dr Cailbhe Doherty

59K views - 4 months ago

Running Shoes vs Evolution: What Does Science Say?

Running Shoes vs Evolution: What Does Science Say? Dr Cailbhe Doherty

288K views - 4 months ago

The Science of Running Injuries: What the Evidence Actually Shows

The Science of Running Injuries: What the Evidence Actually Shows Dr Cailbhe Doherty

18K views - 4 months ago

The Science of Fatigue: How Endurance Performance Is Regulated

The Science of Fatigue: How Endurance Performance Is Regulated Dr Cailbhe Doherty

29K views - 4 months ago

The Physiology of Endurance Running: Energy Systems, VO₂max, and Fatigue

The Physiology of Endurance Running: Energy Systems, VO₂max, and Fatigue Dr Cailbhe Doherty

185K views - 4 months ago

The Biomechanics and Evolution of Human Endurance Running

The Biomechanics and Evolution of Human Endurance Running Dr Cailbhe Doherty

11K views - 5 months ago

How Accurate Is the Apple Watch? A Comprehensive Review of Validation Studies Across All Models

How Accurate Is the Apple Watch? A Comprehensive Review of Validation Studies Across All Models Dr Cailbhe Doherty

2K views - 5 months ago

The Evolutionary Origins of Endurance Running

The Evolutionary Origins of Endurance Running Dr Cailbhe Doherty

6K views - 5 months ago

The Science of Motion Sensing: Why Wearables Get It Wrong

The Science of Motion Sensing: Why Wearables Get It Wrong Dr Cailbhe Doherty

583 views - 5 months ago

Can Wearables Measure Biological Age? A Scientific Review of WHOOP’s Healthspan Feature

Can Wearables Measure Biological Age? A Scientific Review of WHOOP’s Healthspan Feature Dr Cailbhe Doherty

1K views - 6 months ago

Understanding Blood Pressure Notifications on Apple Watch

Understanding Blood Pressure Notifications on Apple Watch Dr Cailbhe Doherty

16K views - 8 months ago

How Accelerometers and IMUs Power Wearable Tech | Explained for Students

How Accelerometers and IMUs Power Wearable Tech | Explained for Students Dr Cailbhe Doherty

634 views - 8 months ago

Apple Watch vs. Lab Test: How Accurate Is VO₂ Max?

Apple Watch vs. Lab Test: How Accurate Is VO₂ Max? Dr Cailbhe Doherty

4.2K views - 9 months ago

The Science Behind Wearable Tech: How Accelerometers and Gyroscopes Work

The Science Behind Wearable Tech: How Accelerometers and Gyroscopes Work Dr Cailbhe Doherty

1.1K views - 9 months ago

Can You Trust Whoop, Oura, Garmin and Polar's “Readiness” Scores?

Can You Trust Whoop, Oura, Garmin and Polar's “Readiness” Scores? Dr Cailbhe Doherty

1.2K views - 10 months ago

Is Your Smartwatch Spying on You? We Analysed 17 Privacy Policies to Find Out.

Is Your Smartwatch Spying on You? We Analysed 17 Privacy Policies to Find Out. Dr Cailbhe Doherty

1.3K views - 10 months ago

From the First Pedometer to the First Fitbit - A History of Consumer Wearables

From the First Pedometer to the First Fitbit - A History of Consumer Wearables Dr Cailbhe Doherty

707 views - 10 months ago

Can You Trust Your HRV? What 14 Days of Real-World Data Revealed

Can You Trust Your HRV? What 14 Days of Real-World Data Revealed Dr Cailbhe Doherty

1.6K views - 11 months ago

How Wearables Measure Your Heart: The Science of PPG

How Wearables Measure Your Heart: The Science of PPG Dr Cailbhe Doherty

1.6K views - 11 months ago

Heart Rate Variability (HRV) Explained: Science, Measurement, and Practical Applications

Heart Rate Variability (HRV) Explained: Science, Measurement, and Practical Applications Dr Cailbhe Doherty

2.4K views - 1 year ago

🔬 How We Discovered REM Sleep & The Truth About Sleep Trackers

🔬 How We Discovered REM Sleep & The Truth About Sleep Trackers Dr Cailbhe Doherty

413 views - 1 year ago

Can You Trust Apple Watch for HRV? A Scientific Validation Study

Can You Trust Apple Watch for HRV? A Scientific Validation Study Dr Cailbhe Doherty

19K views - 1 year ago

HRV Explained: How to Track & Interpret Your Heart Rate Variability

HRV Explained: How to Track & Interpret Your Heart Rate Variability Dr Cailbhe Doherty

9.3K views - 1 year ago

How We Measure Ourselves: The History of Wearable Tech

How We Measure Ourselves: The History of Wearable Tech Dr Cailbhe Doherty

677 views - 1 year ago

Google Pixel Watch 3 Validation Study (2025): Brief Explainer

Google Pixel Watch 3 Validation Study (2025): Brief Explainer Dr Cailbhe Doherty

1.6K views - 1 year ago

Polysomnography vs Wearable Technology: The Evolution and Future of Sleep Tracking

Polysomnography vs Wearable Technology: The Evolution and Future of Sleep Tracking Dr Cailbhe Doherty

938 views - 1 year ago

Photoplethysmography (PPG): Origins to Modern Applications in Wearable Technology

Photoplethysmography (PPG): Origins to Modern Applications in Wearable Technology Dr Cailbhe Doherty

19K views - 1 year ago

How accurate are wearable fitness trackers? Less than you might think

How accurate are wearable fitness trackers? Less than you might think Dr Cailbhe Doherty

2.3K views - 1 year ago

The Rise, Reality and Future of Wearable Devices (Dr Cailbhe Doherty)

The Rise, Reality and Future of Wearable Devices (Dr Cailbhe Doherty) Dr Cailbhe Doherty

1.9K views - 2 years ago

The Science of Heart Rate Variability (HRV): Health, Wellness & Performance

The Science of Heart Rate Variability (HRV): Health, Wellness & Performance Dr Cailbhe Doherty

9.5K views - 2 years ago

Extracorporeal Shockwave Therapy: Evolution, Mechanisms, and Clinical Efficacy

Extracorporeal Shockwave Therapy: Evolution, Mechanisms, and Clinical Efficacy Dr Cailbhe Doherty

21K views - 2 years ago

Demystifying the 'Best' Way to Exercise: The Science of Longevity and Health

Demystifying the 'Best' Way to Exercise: The Science of Longevity and Health Dr Cailbhe Doherty

909 views - 2 years ago

The Exercise Paradox: Can You Really Exercise Too Much?

The Exercise Paradox: Can You Really Exercise Too Much? Dr Cailbhe Doherty

2.2K views - 2 years ago

The Longevity Blueprint: How Exercise Unlocks the Secrets of Aging Well

The Longevity Blueprint: How Exercise Unlocks the Secrets of Aging Well Dr Cailbhe Doherty

464 views - 2 years ago

Muscle Injuries in Athletes: Patterns, Risks, and Recovery Strategies

Muscle Injuries in Athletes: Patterns, Risks, and Recovery Strategies Dr Cailbhe Doherty

2.5K views - 2 years ago

Debunking Diet Myths: Low-Carb vs Low-Fat for Weight Loss

Debunking Diet Myths: Low-Carb vs Low-Fat for Weight Loss Dr Cailbhe Doherty

1.7K views - 2 years ago

Understanding Ligament Injuries in Sport: Causes, Diagnosis, and Treatment

Understanding Ligament Injuries in Sport: Causes, Diagnosis, and Treatment Dr Cailbhe Doherty

4.6K views - 2 years ago

Understanding Sports Injuries: Definition, Classification, and Impact

Understanding Sports Injuries: Definition, Classification, and Impact Dr Cailbhe Doherty

19K views - 2 years ago

Myth-busting the 'Sleep Deprivation Epidemic': Do We Really Need 8-Hours?

Myth-busting the 'Sleep Deprivation Epidemic': Do We Really Need 8-Hours? Dr Cailbhe Doherty

1.6K views - 2 years ago

Can You 'Spot Reduce' Fat? Myth-busting the Metabolism of Fat Loss

Can You 'Spot Reduce' Fat? Myth-busting the Metabolism of Fat Loss Dr Cailbhe Doherty

1.4K views - 2 years ago

Does Strength Training Stunt Your Growth?

Does Strength Training Stunt Your Growth? Dr Cailbhe Doherty

255 views - 3 years ago

Busting the Myth: The Best Way to Lose Weight is Through Exercise

Busting the Myth: The Best Way to Lose Weight is Through Exercise Dr Cailbhe Doherty

347 views - 3 years ago

Busting the Myth: Is Running Really Bad for Your Knees? 🏃‍♂️🦵

Busting the Myth: Is Running Really Bad for Your Knees? 🏃‍♂️🦵 Dr Cailbhe Doherty

1.2K views - 3 years ago

Introducing Cerberus | The Wearable Watchdog

Introducing Cerberus | The Wearable Watchdog Dr Cailbhe Doherty

256 views - 3 years ago

Born to Run 9 | Nutrition For Endurance Running

Born to Run 9 | Nutrition For Endurance Running Dr Cailbhe Doherty

2.3K views - 3 years ago

What is the Greatest Test of Human Endurance? | Ironman | Tour de France | RAAM |

What is the Greatest Test of Human Endurance? | Ironman | Tour de France | RAAM | Dr Cailbhe Doherty

1.4K views - 3 years ago

Sports Nutrition 101 | How Your Body Uses Food to Fuel Exercise

Sports Nutrition 101 | How Your Body Uses Food to Fuel Exercise Dr Cailbhe Doherty

18K views - 3 years ago

Why You Need Carbs to Run Fast | Learning from the Elites

Why You Need Carbs to Run Fast | Learning from the Elites Dr Cailbhe Doherty

1.9K views - 3 years ago

What Happens Your Body During a Marathon?

What Happens Your Body During a Marathon? Dr Cailbhe Doherty

3.8K views - 3 years ago

Why Do You Get Tired During Exercise? | Your Brain as the 'Central Governor'.

Why Do You Get Tired During Exercise? | Your Brain as the 'Central Governor'. Dr Cailbhe Doherty

3.5K views - 3 years ago

Is There An 'Optimal' Diet for the Marathon? | Here's What The Research Says

Is There An 'Optimal' Diet for the Marathon? | Here's What The Research Says Dr Cailbhe Doherty

4.3K views - 3 years ago

Tendon Injuries in Sport: What is 'Tendinopathy'?

Tendon Injuries in Sport: What is 'Tendinopathy'? Dr Cailbhe Doherty

1.3K views - 3 years ago

Explained: Dual Band GPS | A Game Changer for Activity Tracking

Explained: Dual Band GPS | A Game Changer for Activity Tracking Dr Cailbhe Doherty

766 views - 3 years ago

Forefoot vs Rearfoot Running Styles | The Effect on Performance and Injury Risk.

Forefoot vs Rearfoot Running Styles | The Effect on Performance and Injury Risk. Dr Cailbhe Doherty

3.8K views - 3 years ago

Should You Run Barefoot? | Here's What the Science Says.

Should You Run Barefoot? | Here's What the Science Says. Dr Cailbhe Doherty

7.2K views - 3 years ago