Fatigue Isn’t Laziness: Understanding Energy in Parkinson’s Disease and Multiple Sclerosis
- Dr. Jaime Lyn Sanchez

- Apr 2
- 3 min read
A different way to look at fatigue
If you’ve ever found yourself thinking… “Why am I so tired when I didn’t even do that much?”
You are not alone. And more importantly, you are not lazy.
Fatigue in neurological conditions like Parkinson’s Disease (PD) and Multiple Sclerosis (MS) is one of the most common and frustrating symptoms people experience. But it’s also one of the most misunderstood. What looks like low motivation from the outside is often something very different on the inside.
A nervous system that is working harder than it should.
And when you understand that…You can start to work with your body instead of constantly fighting against it.
Why fatigue feels different in PD and MS
Fatigue in PD and MS is not just about being “tired.” It is neurological.
Research suggests that fatigue in these conditions is influenced by several factors, including:
Changes in how the brain processes and transmits signals
Increased effort required for movement due to motor inefficiency
Disruptions in the autonomic nervous system (which regulates energy, heart rate, and blood pressure)
Higher overall energy cost for everyday tasks
In other terms:
Your body is using more energy to do things that used to require less.
So even if your day doesn’t look physically demanding…Your system may still be working overtime.
The cycle most people get stuck in
Here is what I see all the time: On a “good” day, you feel like you finally have some energy.
So you:
Do more
Push harder
Try to catch up on everything
And then the next day? You crash.
You feel worse. More fatigued .More frustrated. And the cycle repeats. This isn’t a lack of discipline.
It’s a lack of strategy.
What the research actually supports
The part that often surprises people:
The right kind of movement can actually help reduce fatigue over time.
Studies in both Parkinson’s Disease and Multiple Sclerosis have shown that:
Regular aerobic exercise can improve fatigue severity and overall endurance
Resistance training can improve efficiency and reduce the effort required for daily tasks
Consistent, appropriately dosed movement supports better energy regulation
Here is an important caveat: More is not better. Better is better.
Exercise needs to be tailored to your system. Because too much can lead to crashes, and too little can lead to deconditioning.
Think of your energy like a budget
One of the most helpful ways to understand fatigue is this: Your energy is not unlimited. It is a budget. And every activity has a “cost.”
Some things are low cost:
Gentle movement
Simple daily tasks
Quiet environments
Some things are high cost:
Multitasking
Busy or overstimulating environments
Long periods of standing or walking
Stressful situations
The challenge? Most people don’t realize what they’re spending until they’ve already overspent.
3 ways to start managing your energy today
You don’t need to overhaul your life overnight.
Start here:
1. Identify your high-cost activities
Pay attention to what drains you the most. It is not always exercise. Sometimes it is:
Social environments
Cognitive load
Stress
Awareness is the first step to control.
2. Spread your energy across the week
Instead of doing everything on your “good” days:
Alternate harder days with lighter ones
Avoid stacking multiple high-energy activities together
Focus on consistency over intensity
Pacing well allows your system to recover.
3. Adjust, don’t abandon
On low-energy days, the goal is not to stop. Itis to adapt. That might mean:
Shorter workouts
Slower pacing
Choosing movements that feel supportive
Even small amounts of movement reinforce your system.
The mindset shift that changes everything
If you take one thing away from this, let it be this:
You are not lazy.
You are navigating a system that requires more effort, more awareness, and more strategy. Once you understand that…You stop blaming yourselfand start building a plan that actually works.
Final thoughts: Knowledge gives you control
Fatigue can feel unpredictable. But it is not random. The more you understand how your body uses and responds to energy, the more control you gain over how you move, function, and feel day to day. That is where real progress happens.
If you feel like you’re stuck in the cycle of pushing too hard and crashing…
You don’t have to figure it out alone. I work with individuals with Parkinson’s Disease and Multiple Sclerosis to build personalized, sustainable strategies that support energy, mobility, and long-term independence.
👉 You can learn more or book a call here: www.neurofitwellness.com
Or reach out directly at: info@neurofitwellness.com
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