Why Does EMDR Make You Tired? (And Why It Might Actually Be A Good Sign)
So, you've been reading about EMDR.
Maybe your therapist brought it up, or you fell down a late-night Google rabbit hole trying to figure out why you can't just move on already. You're curious. Maybe also a little skeptical. And somewhere in your research, you keep seeing people mention how exhausted they feel after sessions.
If you're wondering why EMDR makes you tired, you're not alone. It's one of the most common things people ask before they commit to starting. If you look on tik-tok you’ll see hundreds of videos talking about it!
And, if you're already in treatment and feeling wiped out after every session, you're probably wondering if that's normal or if something is wrong.
It's normal.
And it's actually a sign that something meaningful is happening. Let's talk about why.
When You’re Reprocessing in EMDR, Your Brain is Doing Something Enormous
EMDR stands for Eye Movement Desensitization and Reprocessing. The name is a mouthful, but the process itself is pretty remarkable. During a session, your brain is doing something it was never able to do on its own, it's taking traumatic memories that got stuck and actually processing them.
When something traumatic happens, especially when it happens repeatedly or during childhood, your nervous system doesn't always get the chance to fully digest it. The memory gets stored in a fragmented, dysregulated state. That's why trauma doesn't necessarily feel like a regular memory, it can feel like it's still happening.
EMDR uses bilateral stimulation (usually eye movements, tapping, or sound) to help your brain do something it couldn't do on its own in the moment trauma happened… actually finish processing it. Your brain always had the capacity. It just got interrupted.
That process takes an enormous amount of neurological energy. Your brain is forming new connections, integrating old information, and reorganizing how it holds painful experiences. Feeling tired after EMDR makes complete sense when you understand what your brain just did.
It's the Same Reason You're Tired After a Hard Therapy Session (But Honestly, Maybe Multiplied)
Most people know that a really heavy therapy session can leave you feeling drained. EMDR tends to amplify that. You're not just talking about hard things. You're accessing them at a deeper level, through the body and the nervous system, not just the thinking mind.
During EMDR, your brain moves through different emotional states pretty rapidly. You might feel grief, anger, fear, and relief all within the same session. Your body responds to all of it. Your heart rate changes. Your breathing shifts. You might notice tension moving through your muscles or sensation in your chest.
That's not a side effect. That's the work. And after doing that work for 60 to 90 minutes, your system, your body, is ready to rest.
The Tiredness Means Your Nervous System Is Doing Its Job
Here's what I want you to really take in; feeling tired after EMDR is a sign of integration, not damage.
When trauma gets processed, your nervous system has to recalibrate. It's shifting from a state of chronic activation, where some part of you has been braced for danger, into something more settled. That shift is not always comfortable in the moment. Sometimes it feels like a slow exhale after holding your breath for a very long time.
That's the tiredness. It's your body finally getting the signal that it doesn't have to work so hard anymore.
A lot of people also notice that they sleep more deeply after EMDR sessions, at least for a day or two. That's your brain consolidating what it just processed. Sleep is actually when a huge amount of memory integration happens, so your body craving rest after an EMDR session is it doing exactly what it needs to do.
What to Expect and How to Take Care of Yourself
Knowing why it happens is helpful. Knowing how to handle it is even more helpful.
Most people feel the most tired in the 24 to 48 hours after a session. After that, many report feeling lighter, clearer, or less reactive to the things that used to send them into a spiral. The tiredness is temporary. The shift tends to stick.
A few things that help in that window after a session: give yourself permission to rest without guilt, stay hydrated (this sounds basic but your nervous system genuinely needs it), keep your schedule lighter if you can, and be gentle with yourself if emotions feel a little closer to the surface than usual.
Some people also notice vivid dreams, moments of unexpected sadness, or old memories surfacing in the days after a session. That's normal too. Processing doesn't always stop when you leave the office.
So, Should the Tiredness Scare You Off?
Honestly, only you can answer that. It might depend on the season of life you’re in. But, I'll gently offer this: the things we avoid because they're hard are often exactly the things that would change our lives.
EMDR is not easy. It asks something very real of you. But the fatigue you feel afterward is not the kind that depletes you over time. It's more like the exhaustion after a long run or a really good cry. You feel spent, but somehow also more like yourself.
If you've been carrying trauma for a long time, your nervous system has been working overtime to manage it. EMDR gives it a chance to finally put some of that weight down.
To me, that's worth being tired for.
Reclaim Therapy is a trauma-focused group practice in Horsham, Pennsylvania. If you're curious about whether EMDR might be right for you, we'd love to talk.
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At Reclaim Therapy we are a team of EMDR Therapists who specialize in providing EMDR for CPTSD and EMDR for PTSD
Our team is passionate about helping trauma survivors reclaim their lives from the impact of trauma. If you’re looking for a trauma therapist who truly gets it, shows up as human and has an unwavering belief that you are deserving of healing, we’d be honored to support you!