The 5 Levels of Fatigue

Improve caffeine habits, safety, and mental health based on the
5 Levels of Fatigue system, developed by Caffeine Scientist GreenEyedGuide.

"As a Specialist in the area of sleep-related fatigue, I thought I knew a fair bit about caffeine and how to use it strategically. Wow, was I impressed when I got to know and work with Danielle Robertson Rath! She truly is an expert in her field and has taught me quite a few things about caffeine that I can now pass on to my clients, and of course use myself."

What does caffeine have to do with burnout?

Over 67% of employed Americans struggle with burnout. This burnout leads to billions of dollars in employee turnover, accidents, and illness.

Meanwhile, caffeine is the #1 coping mechanism for sleep-deprivation and stress. For some people, drinking caffeine is like putting on shoes – it’s part of the daily routine. As a result, it’s easy to miss the hints caffeine is making your stress and sleep-deprivation worse. Fortunately, small tweaks to these caffeine habits can drastically improve both physical and mental health.

Enter Caffeine Scientist, Best-selling Author, and Speaker GreenEyedGuide. Her 5 Levels of Fatigue system covers the intersection of mental health, nutrition, and employee safety. This novel approach has helped hundreds of college students, small business owners, and parents find realistic strategies for beating burnout.

5 levels of fatigue presentation for Palmer Johnson
5 Levels of Fatigue Workshop with Palmer Johnson Power Systems - click or tap to enlarge
"My mind is blown about what we just learned about caffeine! As nurses, we are educated on the basics of caffeine as a drug when we administer it to patients. We are not educated on how to use it safely ourselves. It is still a drug! I'm so thankful for Danielle for teaching us tonight!"
5 Levels of Fatigue workshop with PHUN
5 Levels of Fatigue Workshop with Cal State Fullerton's Peer Health University Network - click or tap to enlarge

Beating Stress and Sleep Deprivation with the 5 Levels of Fatigue

In this workshop, attendees learn how to identify and respond to each of the “5 Levels of Fatigue”. GreenEyedGuide reviews the symptoms and consequences per level, as well as recommended science-based, realistic strategies. For every Level of Fatigue, attendees receive tips for optimizing nutrition, safety, and mental health.

Learning Outcomes

  • Learn how to identify the 5 Levels of Fatigue
  • Develop a personalized “Game Plan” for every Level of Fatigue
  • Learn to spot the warning signs that indicate a larger change needs to be made

Watch GreenEyedGuide in Action

GreenEyedGuide has given hundreds of presentations for college students, small business owners, first responders, new parents, and night shift workers.


  • Caffeine, Stress, and Sleep Deprivation
  • Top Caffeine and Energy Drink Myths
  • Beating Burnout with the 5 Levels of Fatigue

Where Caffeine Meets Safety Meets Mental Health

Caffeine does improve mood and alertness…to a point. But where you get your caffeine, how much, how quickly you drink it, how often – these tiny details all make a huge difference in both physical and mental health.

“More Caffeine” cannot prevent fatigue-related accidents. Moreover, no amount of caffeine can cure burnout. As a result, not paying attention to these “Caffeine Science” details can make stress and sleep deprivation worse. This is one of the reasons the 5 Levels of Fatigue should be the foundation for every workplace safety and wellness program.

5 Levels of Fatigue pyramid created by Danielle GreenEyedGuide Robertson Rath
Introducing the 5 Levels of Fatigue, developed by Caffeine Scientist, Author, and Speaker GreenEyedGuide
greeneyedguide bio infographic

Meet the GreenEyedGuide

Danielle Robertson Rath, better known as “GreenEyedGuide”, serves the sleep-deprived and overwhelmed. After earning degrees in biochemistry and food science, she worked in the food, beverage, and supplement industry for over a decade. As the founder of GEG Research and Consulting, she is the author of two books and the leading expert in the science behind caffeine and energy drinks. GreenEyedGuide helps people beat burnout with Caffeine Science.

GreenEyedGuide knows what it’s like to work multiple jobs at once. She knows what it’s like to work night shift. And what it’s like to burnout working in a corporate environment.

GreenEyedGuide serves teams where employees don’t want to hear “just get more sleep” or “that caffeine is going to kill you”.  That’s why GreenEyedGuide’s mission is to be a resource – a GUIDE – for those who drink caffeine and need more realistic tips for beating stress and burnout.

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