You might float out of your Reiki session feeling lighter than you have in months. Or you might leave calm, and then, a day later, find yourself unexpectedly tired, teary, or a little foggy. Both are normal. Neither means anything has gone wrong.
There's a name for the window all of this happens in, and I wish more practitioners explained it before a session rather than only afterward. So here it is, before.
The integration period
The hours and days after a session have a name. Many practitioners call it the integration period. It's simply the window where your body and mind carry on settling after the session itself is over. The table is where the work starts. Integration is where it lands.
Most of the time, integration is quiet. Often it's genuinely pleasant. Occasionally it's uncomfortable, and that rougher version has its own name, which I'll come to. I want you to know the whole range, so that whatever shows up for you, you can recognise it for what it is.
For most people the sharper sensations, if any come at all, pass within a day or two. Many describe gentler shifts continuing to settle over the week that follows. And plenty of people feel nothing in particular but calm, which is perfectly normal too.
What integration can feel like
Everyone's response is different. Here's the range I hear about most, across body, heart, mind, and energy.
In the body. A wave of tiredness as your nervous system drops into rest and repair. Or the opposite, feeling lighter and more energised. Sometimes warmth or coolness moving through you, hours after the session ended. Occasionally the detox-like stuff: a dull headache, extra thirst, a change in appetite or digestion.
In the emotions. Old feelings surfacing to be felt and released, sometimes as unexpected tears. Or unexpected clarity, a realisation that arrives on its own. Often, simply calm. A softness that wasn't there before.
In the mind. Sharper focus, a sense of things lining up. Vivid or symbolic dreams, or unusually deep sleep, the night after. A quiet noticing of old thoughts and patterns loosening their grip.
In your energy. Feeling more connected to yourself, your intuition, your own sense of direction. A heightened sensitivity, noticing a little more than usual.
No two sessions integrate the same way, even for the same person. Reiki meets you where you are, on the day you're there. So try not to measure one session against the last, or against someone else's story. Yours is allowed to be its own.
When it's the rougher kind: a healing crisis
Sometimes integration takes a rougher form. You came in for relief, and for a stretch you get something that briefly resembles the opposite of relief. This is often called a healing crisis, and it's the part I most wish people were told about in advance, rather than left to worry through afterward.
The term isn't unique to Reiki. It shows up across a range of body-based and energy healing traditions to describe a temporary intensification of symptoms that can follow a session, before things settle into something better than baseline.
In a Reiki context, the working idea is this: energy in the body doesn't always move cleanly. Long-held tension, suppressed emotion, and old patterns can sit compressed in the system for years. A session brings movement and attention to areas that haven't been touched in a while, and that movement has to go somewhere. Sometimes it surfaces as physical sensation. Sometimes as emotion. Sometimes both.
I want to be honest about where this stands evidentially. There isn't a rigorous clinical literature confirming a specific physiological mechanism behind a Reiki-induced healing crisis, and reasonable people can hold different views on why it happens. What I can speak to is the pattern I've seen consistently across more than 130 sessions: it is common, it is usually mild, and it usually passes within a day or two.
What this looked like for me
I experienced my own healing crisis early in my own Reiki journey, when I'd only just begun. An acquaintance was starting a new energy practice, not Reiki specifically, but something close in spirit, and I went to her table already burnt out, already anxious in a way that felt like my head and my gut were both constantly on fire. I had the IBS to prove it. I was looking forward to finally feeling relaxed, to some kind of release.
She was warm and attentive, and I felt genuinely at ease with her. Then, partway through, with no obvious trigger, I started to sob. Big, full tears, right there on her table. She didn't panic. She just checked in gently, asked if I was okay and wanted to continue. I did. But something had shifted internally. Being cared for like that, finally able to let my nervous system stand down after carrying so much pressure for so long, seemed to loosen something I'd been holding shut for a long time. I left the session a little dazed.
The days that followed did not go well. I was an emotional wreck. For so long I'd held everything together, and now it wasn't holding. This was before I'd started therapy. I cracked. A major panic attack hit right before a high-stakes work presentation. I phoned in sick that morning, then talked myself down and went anyway, because I couldn't let my teammates absorb the fallout. I got through it, but I was a mess. Not long after, I went to my doctor and asked for the five weeks of medical leave I badly needed.
At the time, I genuinely believed that session had broken me. In hindsight, I understand it differently. The energy work didn't cause what happened. It surfaced the truth of what was already happening, that I had been carrying more stress than my body could sustain, and I was already close to a breaking point. Without that session, the crack likely would have shown up somewhere else, in my body, as something harder to reverse. The session was more like a canary in the coal mine. It didn't feel good in the moment. It probably saved me from something worse. If any of that self-override sounds familiar, I've written about it more fully in burnout as self-abandonment.
Why a rough patch isn't a sign something went wrong
The instinct, understandably, is to worry. You came in for relief, and you got something that briefly resembles the opposite. I want to offer a different frame.
Think of it less like damage and more like disruption to a pattern that had gotten very still. If you've been holding tension in your shoulders for three years, your body has built a whole structure of compensation around that holding, other muscles working harder, your breath shaped around the tightness, your nervous system treating that tension as normal. When that pattern gets interrupted, even gently, there's a period of recalibration before the new, looser state settles in. That recalibration can feel uncomfortable simply because it's unfamiliar, not because it's harmful.
The same logic applies to emotional material. Something suppressed for a long time doesn't always leave quietly. Sometimes it needs a bit of movement and expression on its way out.
What actually helps afterward
If you're in the middle of this kind of response, here's what tends to support the process rather than fight it.
Rest more than you think you need. This is not the week to schedule back-to-back plans right after a session. Give your system room to finish what it started.
Drink more water than usual. Whatever the exact mechanism, hydration seems to genuinely ease the physical symptoms people report.
Let the emotion move if it wants to. If tears show up, let them. Trying to suppress a healing crisis emotionally tends to just prolong it.
Keep your hands on your own body. A short self-Reiki practice, hands over the heart or the belly for a few minutes, can help the system settle rather than spike further. My free guide, A Few Gentle Practices for Hard Days, walks you through it.
Be gentle with your own expectations. This isn't the moment to judge whether Reiki "worked." A rough day or two afterward doesn't erase the session, it's often part of it.
When to check with a doctor
A healing crisis is, by definition, mild and temporary.
If what you're experiencing is severe, doesn't ease within a couple of days, or involves anything that would concern you regardless of context, high fever, chest pain, severe or worsening symptoms, anything that feels medically serious, please see a doctor. Reiki is a complementary practice. It sits alongside medical care, never in place of it, and no practitioner worth working with will ever tell you otherwise.
The same goes for the emotional side. If what surfaces feels like more than a raw day or two, if the anxiety or low mood settles in and stays, that is not a failure of the practice, and it is not something to white-knuckle your way through the way I once did. It is a sign to reach for real support, a therapist, your doctor, someone you trust. I waited far too long to do that. You don't have to.
The part that matters most
If you take one thing from this, let it be this: feeling worse for a short stretch after a session is not evidence that something is broken, in you or in the practice. It's often evidence that something long-still just started moving again. Give it a little time, a little water, a little rest, and check in with yourself, and with your practitioner, if anything feels like more than that.
Maria