Why Your ADHD Brain Runs Out of Energy So Fast

You wake up, get your coffee, and try to get ready for your day, only feeling exhausted even though you slept. You get started with your household chores, get the kids off to school, and then try to get to work on time. It feels like you are running in high gear when no one else at work seems to be as on edge as you feel. By lunchtime, you feel drained, and coffee isn’t helping. You’re struggling to finish tasks and don’t know how you'll make it through the day.

If this sounds all too familiar, you may be experiencing what is known as ADHD low energy or fatigue.  ADHD fatigue is different than regular tiredness. It is a persistent physical and mental exhaustion that doesn't really seem to improve with relaxation or rest.

ADHD brains are constantly working overtime, and they have to work much harder than everyone else to accomplish the same tasks, which ultimately leads to energy depletion, causing fatigue.  ADHD exhaustion is common, with about 62% of people with ADHD also having fatigue symptoms.

This article will go over some of the causes of ADHD low energy and fatigue symptoms, and provide some practical solutions so you can start to feel less overloaded.

The Mental Marathon Your Brain Runs Every Day

An ADHD brain is constantly working to maintain focus, filter out distractions, and stay organized. Cognitive load is the effort your brain uses, like your mental workspace, and when you have ADHD, this area is constantly overwhelmed, leading to fatigue.

Filtering out distractions alone can wear your brain out, and it is doing this all the time, even if you don't notice. All this mental effort adds up throughout the day, leading to exhaustion or low ADHD energy by the end. So it's no wonder that you are experiencing ADHD and chronic fatigue.

Maintaining focus that is required for boring or understimulating tasks is even harder for someone with ADHD. Your brain may also jump from task to task, which not only leaves some things unfinished but also drains you faster and adds to your stress levels and sense of accomplishment.

When Your Brain Chemistry Works Against You

People with ADHD tend to have lower levels of norepinephrine and dopamine in the brain. These neurotransmitters are necessary for many of your day-to-day functions, including motivation and alertness.

When your brain has less of these neurotransmitters to work with, you may struggle to feel energized and experience ADHD low motivation. Your brain can feel stagnant and exhausted when it doesn't have enough chemicals for its functions.

So you may feel your ADHD makes you tired all the time, even though you want to be active. It's not really something you can push yourself through or find more willpower for; you just have fewer neurotransmitter levels for the brain to use, which leads to both mental and physical exhaustion.

The Different Ways ADHD Exhaustion Shows Up

ADHD exhaustion is not the same for everyone. There are many different ways that it can manifest in your life. You may feel physically, mentally, or emotionally tired, or a combination of all three. Many people with ADHD experience at least one of these forms of ADHD burnout.

Physical Tiredness That Sleep Doesn't Fix

So why does ADHD make you tired? You may feel that you are always dealing with a physical tiredness that nothing seems to help, even sleep.

Most people with ADHD tend to have disrupted sleep anyway, but even if you have a good night's sleep, your body can still feel heavy, and everyday tasks seem more difficult than usual. You may dread taking a shower because you know that it will make you feel even more tired afterwards.

Some people with ADHD feel tired, but wired too. So your brain may have racing thoughts, but your body doesn't want to keep up, so you find yourself resting more throughout the day without feeling tired enough for a nap. Intense hyperactivity or sensory overload can often cause people with ADHD to feel this overwhelming sense of being tired.

Mental Fog and Brain Exhaustion

Mental exhaustion can feel overwhelming.  You almost feel loopy, like you ever watch kids late at night when they are so worn out they get silly? That's what mental exhaustion can feel like. You may feel:

• Disorganized thoughts: Your thoughts are jumping around, and you can’t form sentences the way you want to.
• Forgetfulness: ADHD brain fog and tiredness cause you to forget important events, details, or even people's names.
• Trouble thinking clearly and concentrating: You can't concentrate on even the smallest of things, and you aren't able to think as quickly or as clearly as normal.
• Processing information: You may feel like just finding an address or adding up costs at the grocery store is more difficult than usual.

Mental fatigue can make concentration even harder than it usually is for people with ADHD. This brain fog can certainly cause issues with work, school, relationships, and even household responsibilities.  

Intense focus or concentration, like for work or other stimulating projects, tends to make you feel depleted even faster. By the middle or end of the day, you may feel that your brain is overloaded and ready to give out on you.

Emotional Exhaustion and Burnout

Emotional regulation is difficult for many people with ADHD, especially when they are already tired. Emotion dysregulation is a primary symptom of ADHD, and it can lead to feeling overwhelmed, angry, and even numb.

People with ADHD often use strategies to manage their emotions that are not always healthy, like suppression. You can suppress emotions, but they will eventually rise to the surface and show up even at the most inopportune times. Trying to suppress emotions becomes even harder when you already have ADHD and are feeling drained.

Then you may start to feel guilty about your emotional overload or outbursts, which can create even more exhaustion, leading to what is known as ADHD burnout. ADHD burnout is an intense emotional, physical, and mental exhaustion from the added effort that you tend to put into managing your ADHD symptoms on your own.

What's Actually Causing Your ADHD-Related Exhaustion

Multiple factors lead to ADHD exhaustion, and they often work together. Understanding the causes of burnout can help identify which solutions will work best. Some of these causes are directly related to having ADHD, such as sleep issues and the constant focusing that your brain has to do, while others are secondary effects. Let's take a closer look at some of the causes of ADHD low energy.

Sleep Problems That Come With ADHD

Sleep problems can lead to ADHD low energy levels. Sleep issues are extremely common in people with ADHD, with recent studies suggesting that around 80% of adults with ADHD also have insomnia or other sleep-related issues. Around 60% of men and women with ADHD receive a diagnosis for a co-occurring sleep disorder.

Common sleep disturbances that affect individuals with ADHD include:

• Difficulty falling asleep: Your body feels tired, but your mind may not slow down enough for you to actually fall asleep, and you lie in bed, looking at the clock every 30 minutes.
• Restless sleep: Even when you manage to fall asleep, you are moving around and switching sides frequently.
• Waking up frequently: You wake up three to four different times each night, so you never really get a chance to have a full, uninterrupted night's sleep.
• Trouble waking up in the morning: Once you finally get to sleep, it can be very hard to wake up when the alarm goes off, and you may turn it off and go back to sleep, even if you're running late for work or school.

One of the reasons for these sleep issues has to do with the ADHD brain not being able to slow down or wind down enough to sleep. Racing thoughts or late-night hyperfocus can make it difficult to "turn off" your thoughts and get ready to relax and go to sleep. Poor sleep quality leads to a vicious cycle with daytime ADHD fatigue and eventually burnout.

ADHD medications can sometimes worsen sleep problems if taken too late in the day. Clinicians can adjust the last dose to prevent this side effect.

The Energy Cost of Constant Focus Battles

An ADHD brain has lower levels of dopamine and norepinephrine, which are needed for paying attention and focus. People with ADHD put in extra effort to maintain focus, leading to attention regulation fatigue, a type of exhaustion from constantly needing to refocus.

Not to mention, your brain is constantly fighting off distractions from all angles, which simply depletes your mental energy. Mundane or boring tasks require more effort to stay engaged, so when you have to do household chores like washing dishes, it can lead to ADHD burnout.

Becoming depleted from maintaining attention all day doesn't just cause problems with work or home life, but can also add stress to personal relationships. You may be accused of not paying attention or forgetting important dates and facts. However, it's not intentional; your brain is just overworked.

Stress and Overwhelm From Daily Life

Living with ADHD symptoms alone can be stressful, but then you add on the everyday stress of daily life, and it can create a constant state of chronic stress.

Managing ADHD fatigue is challenging due to the mental overload of remembering tasks and staying organized, along with physical exhaustion from daily activities, which causes tension in the body.

You feel like you are always in a hurry to get somewhere, or you're always on edge, and you never feel like you're caught up. Even if you make a to-do list and check it off as you go about your day, it's just an underlying sense of "I'm not doing enough."

Another overwhelming aspect that adds to people with ADHD having low energy is sensory overload. If you walk into a room with a lot of clutter, or just being out in a large crowd, it can feel like the walls are caving in.

This overwhelm from crowds, noises, and busy environments can add to your stress, causing ADHD mental exhaustion to get worse. Sensory overload in individuals with ADHD triggers excess cortisol release, leading to a chronic state of fight or flight.

Is It ADHD Fatigue or Something Else?

ADHD fatigue can look similar to other conditions, which can make it more confusing when you are trying to get to the bottom of your symptoms. Issues like depression or chronic fatigue may have overlapping symptoms, making it more difficult to determine what the root cause is. It's important to seek help from a licensed clinician to determine the cause of your ADHD and low energy.

ADHD Exhaustion vs. Depression

ADHD exhaustion is different than depression-related fatigue, though they can certainly overlap. ADHD burnout is caused by intense focus, but is typically relieved when switching to something fun or getting some rest.

Depression-related fatigue symptoms are chronic and don't tend to get better with changing activities or sleep. Depression feelings lead to a sense of hopelessness and anhedonia, which is a loss of enjoyment in all activities. So, ADHD low energy is caused by certain factors and situations, but depression-related fatigue is constant and long-lasting.

To add to the confusion, some people with ADHD also have co-occurring depression symptoms. ADHD can exacerbate depression symptoms, too, so it's crucial to get to the bottom of your symptoms so you can have one or both conditions treated.

If your fatigue is accompanied by any feelings of hopelessness, loss of pleasure in activities, or thoughts of worthlessness, you should see a professional.

When ADHD and Chronic Fatigue Overlap

ADHD fatigue and chronic fatigue syndrome (CFS) have overlapping symptoms and are actually common co-occurring conditions. Studies indicate that around 29% of CFS patients also have adult ADHD.

CFS involves severe fatigue lasting six months or longer that significantly limits your day-to-day activities. CFS-related tiredness doesn't seem to improve with restful sleep.

ADHD low energy is impacted by mental and physical overload, but shouldn't be chronic or every day. CFS is usually accompanied by a severe "crash" triggered by everyday activities. You may even feel like you have the flu during these crash periods.

If fatigue symptoms are still bothering you even with ADHD treatment, you might want to see if your provider can evaluate you for CFS. Treating ADHD usually improves energy levels, so if you are on ADHD medication and still suffering from chronic tiredness, it's best to have an evaluation to see if you also have CFS.

Practical Ways to Manage Your Energy When You Have ADHD

ADHD fatigue and burnout symptoms can be frustrating, but some specific evidence-based strategies can really make a difference. Lifestyle changes like changing your sleep and eating habits, working with the natural flow of your energy, and possibly even professional treatment can help with ADHD low energy symptoms.

Improvement may take trial and error. Be patient as you explore different lifestyle changes to find what works best for you.

Sleep Strategies That Actually Work for ADHD Brains

Traditional sleep advice doesn't really work well for the ADHD brain. So let's take a look at some ADHD-specific tips for better sleep. These include:

• Maintaining a consistent sleep schedule: Keep a regular sleep routine, even on weekends, to help manage energy levels. ADHD brains need consistency, and your sleep schedule doesn't have to look like anyone else's.
• Create an evening wind-down routine: It's hard for an ADHD brain to shut off once it gets going. So find chill, relaxing evening activities to do each night. Engage in reading, gentle stretching, or simple tasks that require little focus to help your body and mind relax.
• Create a soothing bedroom environment: Make sure that your bedroom is clear of clutter, as this can distract you and cause sensory overload, disrupting sleep.
• Time ADHD meds earlier: Be sure not to take your last ADHD medication too late in the day, as it can cause insomnia for some people.
• Try white noise: Keep some in the background to avoid hearing distracting sounds at night. You can use a fan or an air purifier to drown out pet sounds or other noises.
• Add a weighted blanket: If you experience any restlessness at night, a weighted blanket could help calm your nervous system.

You don't have to try all of these, and you may find one or two that seem to work better than the others. The key is to be patient, as sleep improvements can take a few weeks.

Managing Your Energy Throughout the Day

You can help prevent ADHD low energy levels by working with your natural flow of energy instead of working against it. Some tips for managing energy levels with ADHD include:

• Schedule your demanding tasks during your peak energy times: Whatever time of day you usually feel most motivated, that's when you want to work on them. For many people, this is in the morning.
• Take regular breaks: Studies show that taking "mini breaks" between 2-10 minutes can drastically help to reduce burnout. So take as many breaks throughout the day as you need; it will be easier to prevent ADHD fatigue than to bounce back from it.
• Use timers and structure your work periods: There are many timer apps you can use to help you structure your day so you don't suffer from time blindness or hyperfocus on any one task.
• Take a movement break: It's important to get up and walk around to reset your energy and reduce cortisol, especially when you are working at a desk or sitting for long periods. If you can take a 20-minute break outside in nature to reduce cortisol levels.
• Minimize energy crashes: Try to reduce the likelihood of energy "crashes" by exercising, eating protein snacks, and taking short, frequent walks.

Try to avoid comparing yourself to others, because you won't experience ADHD the same way they do.

What to Eat (and Avoid) for Better Energy

Food is essentially energy, and what you eat can determine your energy levels throughout the day.

Foods to Eat

Your blood sugar level fluctuations can affect ADHD symptoms and energy levels.  It's good to try to eat high-protein, healthy fats, and omega-3-rich foods like nuts and eggs to help keep your blood sugar levels stable. Try not to skip breakfast, as it has been shown to increase ADHD symptoms. Even if you aren't hungry, try some fruit for breakfast.

Always stay hydrated. Drinking water throughout the day can help reduce symptoms, and even mild dehydration can worsen fatigue.

Foods to Avoid

You want to avoid highly processed foods, sodas, candies, and other sugary snacks, which can cause a rapid spike in blood sugar followed by a crash, which really drains your energy.

You also want to limit caffeine intake, which can help some people initially, but usually comes with a crash, worsening ADHD fatigue.

When Professional Treatment Makes the Difference

Sometimes you can make all the lifestyle changes and it just isn't enough. That's perfectly normal. When that happens, it may be time to seek professional help.

Untreated ADHD symptoms can cause other co-occurring conditions to worsen, and you can end up in a cycle of exhaustion.

Proper ADHD treatment can significantly reduce ADHD fatigue by reducing the mental effort required to do basic, daily tasks. Medication will need to be timed properly so that it doesn't disrupt your sleep, but your provider can work with you to find an appropriate time to take your medication.

Cognitive-behavioral therapy (CBT) is a helpful part of ADHD treatment that can help you learn to work with your energy levels better and improve ADHD low energy. If you have any co-occurring disorders, getting treatment for those can also help to reduce ADHD burnout. Ideally, you want to get to the bottom of your signs and symptoms so that you can manage them better and live a less stressful life.

Reaching out for help is not a bad, scary thing. It's the first step in healing. ADHD Advisor offers accessible online assessment and treatment options for people with ADHD. We offer same-day appointments, and if a diagnosis is made, you will receive a treatment plan right away that includes therapy, medication, or both.

Moving Forward: Finding What Works for You

Managing ADHD fatigue is an ongoing process and not a one-time quick fix. It involves incorporating strategies that work well for you, and this requires a bit of trial and error to find what works.

Even if you start with one or two small changes, you may notice a difference. Some days will be exhausting and overwhelming, but that's a normal part of having ADHD. Eventually, you will find a rhythm that fits your life and helps you feel better.

Your ADHD fatigue is a very real issue, and the good news is that there are ways to manage symptoms. If fatigue is bothering you and you think you might have ADHD, take our short assessment today.

If you qualify for an online evaluation, we can get you in to see a licensed clinician right away. Don't let low energy from ADHD keep you from living your best life. Take the ADHD Advisor's assessment to take the first step toward treatment.

Frequently Asked Questions

Why does ADHD cause low energy and fatigue?

An ADHD brain uses more effort due to lower dopamine and norepinephrine levels, resulting in low energy and fatigue.

What is ADHD burnout and how does it lead to exhaustion?

ADHD burnout is a state of mental, physical, and emotional overload resulting from managing ADHD symptoms like hyperfocus and overthinking. Intense hyperfocus can lead to burnout.

Is low energy a sign of inattentive ADHD?

Yes, low energy can signal inattentive ADHD, as the brain constantly struggles to filter distractions and maintain focus.

How can I manage low energy with ADHD naturally?

You can manage low energy with ADHD naturally by maintaining a strict sleep schedule, exercising, eating a nutritious diet, and taking frequent mini-breaks throughout the day.

Does ADHD medication cause tiredness or low energy?

Yes, ADHD medication can cause tiredness or low energy, especially if you take the immediate-release stimulants, which are associated with a rebound effect or “crash,” or if your dose is too high or too low.

What are the symptoms of ADHD fatigue in adults?

Some symptoms of ADHD fatigue in adults can include:

• Feeling “loopy” or brain fog
• Physical tiredness but racing thoughts (wired, but tired)
• Low motivation
• Increased irritability

What is the best diet for ADHD and low energy levels?

The best diet for ADHD and low energy levels includes healthy fats, high-protein foods, and nutrient-dense foods rich in magnesium, zinc, and vitamin D.

How can I improve my sleep to have better energy with ADHD?

You can improve your sleep and energy with ADHD by maintaining a strict sleep routine every day.

What are the best supplements for ADHD fatigue?

The best supplements for ADHD fatigue include magnesium, omega-3 fatty acids, iron, zinc, and vitamin D.

How do I break the cycle of procrastination and low energy with ADHD?

Schedule your most demanding tasks around your natural energy levels and break down difficult tasks into manageable ones to help break the cycle of procrastination and low energy with ADHD.