Exercise Isn't the Problem With Sjögren's. The Boom-and-Bust Cycle Is.

You didn't do anything wrong when movement flattened you. You dosed it wrong, and dosing is a skill you can learn.

By Christina Russo, Health Coach, Stronger With Sjögren's, Immune Confident Institute

You had a good day. You felt almost like yourself, so you did the thing. Maybe a real walk. Maybe you finally cleaned the house. Maybe just a normal afternoon out.

And then you paid for it. Not that night: the next day, and the day after that. Flattened, foggy, aching.

Here's where I want to start, because I think you already know it. That wasn't ordinary soreness. You've had ordinary soreness, and this was something else. Your read on that was correct.

So let me tell you what actually happened. You didn't do anything wrong. You dosed it wrong. Nobody ever taught you how to dose movement for a body like yours, and that's a learnable skill, not a personality trait.

I'm a health coach with the Immune Confident Institute's Stronger With Sjögren's program, and like many of you, I also live with complex immune conditions. So when I talk about the crash after you overdo it, I'm not speaking from a textbook. For a long time, I thought the answer was to push harder on my good days, and all that got me was a longer recovery.

This is education and coaching, not medical advice for your situation. Please run anything new past your own care team first.

The enemy was never exercise

Here's the idea that changed everything for me. For most of us with Sjögren's disease and autoimmune fatigue, the right amount of movement genuinely helps. The real problem is the pattern so many of us fall into:

We feel good, so we do a lot. Then we crash. Then we rest so long that we lose a little strength. Then we feel behind, so on the next good day, we overdo it again.

That cycle has a name: boom and bust. It's the thing that wears you down over time. The skill we're building isn't intensity. It's getting off that roller coaster.

What the Sjögren's exercise studies show

When researchers have studied exercise in people with Sjögren's disease, the results are genuinely encouraging.

A 2025 review of five randomized trials, with 269 participants, found that exercise improved pain, fatigue, quality of life, and aerobic capacity compared with no exercise. Resistance training, the light strength work, stood out as the most effective. In a supervised walking trial, fitness and fatigue improved while disease activity stayed stable.

That last part is the one I care about most. At the right dose, movement didn't flare the disease. So this isn't about pushing through and hoping. A body like ours can respond well to movement when it's dosed right.

There's a reason for that. In the right amount, movement behaves like a calming signal to the immune system, not a stressor. When your muscles work, they release their own messengers, including one called IL-6, that set off an anti-inflammatory response. In plain language: the goal is never to punish your body. It's to give it just enough of a good signal.

Two traps, one on each side

You can fall off either side of this.

The first trap is overdoing it, the boom and bust. You push past your limit, and your body sends the bill later.

The second trap is the opposite, and just as real: deconditioning. When a crash scares us, we stop moving almost entirely. The body gets weaker, which makes the next attempt even harder.

So the answer is never no movement. It's the right small dose, repeated.

For nearly two decades before my health shifted, I was a spin instructor, teaching 50- to 60-minute high-intensity cycling classes every week. For years after my health changed, I kept trying to ride the way I used to, that hard and that long. I was trying to keep up with my old self, and I'd pay for it on the back end with post-exercise fatigue, pain, and discomfort. Eventually those reactions discouraged me from riding at all.

Then I realized something. The same bike, for less time and at a lower intensity, wasn't just doable. It actually felt good. It helped me build strength and resilience, and I could enjoy it again without fear. Over time, and very gradually, I was able to increase both time and intensity to a new place where I can challenge myself while staying inside my body's limits.

5 rules for dosing movement

This is the part to save. Think of these as your rules of the road.

1. Start lower than you think you should. Whatever you think you can handle, start under it. You can always add more next week. You can't unring a crash.
2. Work in short bouts, not one long push. Ten minutes twice is gentler on your body than twenty minutes once. Breaking it up isn't cheating. It's strategy.
3. Pick low impact first. Walking, water, a chair-based routine, gentle strength work, stretching. If standing up makes you dizzy or makes your heart race, start lying down or seated, on a recumbent bike or in the pool, before you work your way upright.
4. Build in rest and recovery on purpose. Recovery isn't the reward for the work. It's part of the work. Rest days are where the benefit settles in.
5. Let today's body set today's dose. A green day and a red day don't get the same session. Scale it down when you slept badly or when you're already flaring. That isn't failure. That's the whole skill.

Sore, or a crash? How to tell the difference

Ordinary soreness shows up in your muscles within a day or so, in proportion to what you did, and it eases with normal rest.

A real crash is different. It's delayed, way out of proportion to what you did, and it hits more than your muscles: the fog, the flu-like feeling, the dizziness. And it drags on for days.

If what you're feeling is that second thing, that's information. It means the next session gets dialed down, not pushed through.

I've been there. I've felt the fear of trying again. So when you return to exercise, use what you learned from the last session and let it guide you, as information rather than discouragement. The time, the intensity, and the type of exercise are what get modified: scale them back to a fraction of what you're inclined to do. And do it without comparing yourself to a previous version of you, a peer, a coworker, or a friend. The goal isn't to do what you used to do or what someone else can do. It's to find the dose for the body you have today.

The honest part: when the rules change

You deserve the truth, not a slogan. When I say exercise helps, that's true for most people with Sjögren's disease, but not for everyone in every situation.

Most Sjögren's fatigue is what's called post-exertional fatigue: you get tired, sometimes really tired, but your body recovers. In one study that looked closely at this, grip strength fully recovered within about an hour after exertion. That's very different from the deep, lasting crash you hear about with ME/CFS or long COVID.

But some of us in this community are also living with long COVID, ME/CFS, or POTS on top of Sjögren's. For that group, there's a real thing called post-exertional malaise: even gentle activity can cause a delayed, whole-body crash that lasts for days. If that's you, the rules change. The priority is pacing first, staying inside your energy envelope, and getting your care team involved before any structured progression. A steadily increasing plan that ignores your symptoms is exactly wrong for a body with true post-exertional malaise.

I won't pretend the experts all agree here, because they don't. What they do agree on is this: listen to your own body's response, and let that set the pace, not a calendar.

Leave something in the tank

After each session, you should feel like you still have something left. If you feel entirely depleted, that's likely a sign you've gone past your current capacity.

Here's how I'd think about it. If something came up, an errand to run, a friend to help, a family member to care for, could you do it? Leave yourself enough energy that the answer is yes. Not that you want to do more, but that you could if you needed to. That's what staying inside your energy envelope means.

3 steps you can start this week

Step 1: Do a quick self-check

Two questions:

• Does activity give me a delayed, whole-body crash that lasts more than a day?
• Do I get lightheaded, or does my heart race, when I stand up?

If either answer is yes, start with pacing and loop in your care team before you build a routine.

Step 2: Pick a small, gentle starting point

Low-impact movement plus a little light strength work, since that's what the studies favored most. If standing is hard, start seated or lying down. A reasonable rhythm, mirroring the Sjögren's studies that worked, is three short, easy sessions a week at a pace where you could still hold a conversation. Build how often and how long before you ever add intensity.

Step 3: Adjust every single time

Before each session, check in. How did I sleep? How's my pain? How's my dryness today? Let that answer set your dose. Progress only when your current level feels genuinely easy and doesn't cost you the next day. And after a flare or a hard pain day, back off, guilt-free.

What I'd skip

This is where I see people spend money and energy that buys them nothing.

• A structured program with a fixed weekly progression. Any plan that tells you what week four looks like before it knows what week one cost you is the wrong plan for this body.
• Letting a wearable's recovery score decide your day. Some of you love the data, and that's fine. But the score doesn't know about your dryness or your pain, and I've watched people override a genuinely bad morning because a number told them they were ready.
• Fitness apps that reward streaks. A rest day shouldn't break anything.

None of that is a substitute for two minutes of asking yourself how today actually is.

You were never short on effort

Years ago, I exercised five or six days a week: cardio days, weight room days, sports, Pilates, sometimes more than one in a day. Back then, I thought success meant pushing through, especially on the days my body was telling me otherwise. I defined success by how far I could perform beyond my limits.

Now I see it very differently. Our bodies are incredibly intelligent informants, if we learn to listen. My movement goals vary from day to day. I pay attention to my body's quiet cues instead of waiting for it to shout. That has let me enjoy movement again, recover properly, save energy for the other things I love, and make movement part of my life instead of something I have to recover from.

So here's what I needed someone to tell me. You have never been short on effort. Most of you have been trying hard for years, and that's the whole reason you crashed. What needed to change was never how much you were willing to give. It was how it was dosed.

Consistency at a dose your body can actually accept will always beat one hard push you pay for later. And here's what that gets you, because it isn't a fitness goal. It's walking your dog without deciding whether tomorrow is worth it. It's coming home from a workday with something left. It's a Saturday you don't have to schedule recovery around. It's saying yes to something on a Tuesday without doing the math first.

That's the point. Not the workout: the week around it.

Your turn

What's one kind of movement that has actually felt good for your body, not punishing? Share it in the comments. Your answer might be exactly the idea the next person needed.

If you want to go deeper:

• Immune Confident RISE: if you've already got the labs, the specialists, and the folder on your phone, and what you need is someone to tell you which parts matter, that's what RISE is for. Our team helps you turn what you've collected into a plan you can act on. One short application, we read it, and we point you to the right fit. No payment or obligation to apply, and the entry level is open to anyone. Start here: https://immuneconfidentinstitute.com/rise/
• Free Lab Conversation Guide, the exact questions to bring to your next appointment so it moves things forward: https://immuneconfidentinstitute.com/ic-lab-guide
• IC Indicator Quiz, a free two-minute check-in on where your immune health stands right now: https://immuneconfidentinstitute.com/ic-indicator

And if this gave you a kinder way to think about moving your body, send it to someone who's been afraid to try again.

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