If you get migraines, you have probably had this experience.
You decide to get fit. You go for a run, or push harder than usual at the gym, and within a few hours you have an attack.
So you conclude, reasonably, that exercise is a trigger for you. And you stop.
Here is the frustrating part. Both things are true at the same time. Exercise genuinely can trigger an individual attack. And regular aerobic exercise appears to reduce how often attacks happen overall.
That contradiction is why so many people with migraine end up avoiding the one lifestyle change that might actually help them. So let us work through it properly.
What the Evidence Actually Shows
A systematic review and meta-analysis published in the Journal of Headache and Pain examined aerobic exercise as a preventive treatment for migraine.
The result: a significant reduction in the number of migraine days, with a mean reduction of around 0.6 days per month.
Unpooled data from the included studies also showed reductions in attack duration of roughly 20 to 27 percent, and reductions in pain intensity of roughly 20 to 54 percent.
The authors concluded there is moderate quality evidence that aerobic exercise therapy can decrease the number of migraine days in people with migraine, while noting that no firm conclusion could be drawn for pain intensity or attack duration from the pooled data, and that effect sizes were small partly because the studies were not uniform.
Separate reviews have gone further. One noted that randomized controlled trials have demonstrated that a sufficiently rigorous aerobic exercise program on its own is enough to produce a statistically significant reduction in migraine frequency, intensity and duration.
Let us be honest about the size of that benefit. Roughly half a migraine day less per month is real, measurable, and not transformative on its own. If you have twelve migraine days a month, exercise alone is unlikely to solve your problem.
But it is free, it has a long list of other benefits attached, and the same reviews note that adding exercise to a conventional preventive regimen may provide added benefit on top of what medication achieves.
Why It Can Also Trigger an Attack
Physical exertion is a recognized migraine trigger for a meaningful proportion of people. That is not imagination and it is not weakness.
Several factors seem to contribute:
Intensity. High intensity effort appears more likely to provoke an attack than moderate effort.
Sudden increases. Going from nothing to a hard session is a bigger provocation than gradual progression.
Dehydration. Common during exercise and a well recognized contributor for many people.
Missed meals or low blood sugar, which frequently accompany exercising first thing or late in the day.
Heat. Exercising in hot conditions adds a load that many people with migraine find difficult.
And poor sleep, which affects both your migraine threshold and your tolerance for exertion.
Which means the problem is often not exercise itself. It is the circumstances around it.
The Approach That Resolves the Paradox
Here is how clinical guidance suggests threading the needle.
Work at a submaximal level. Guidance in this area suggests that aerobic exercise at a submaximal level is the best option for migraine prophylaxis. Not maximum effort. Comfortable, sustainable, moderate work.
Aim for a reasonable dose. A clinical practice guideline for therapeutic exercise in migraine notes that regular moderate aerobic exercise, more than 40 minutes, three times per week, appears effective for reducing both severity and frequency of attacks.
Build up slowly. This matters more for you than for most people. Starting at twenty minutes of easy walking and adding a little each week is far more likely to succeed than starting with a hard session.
Control the conditions. Hydrate before and during. Eat beforehand. Avoid the hottest part of the day. Protect your sleep in the days around it.
And if you cannot tolerate higher impact activity, the literature notes that low impact options such as yoga may still be beneficial. Walking, swimming and stationary cycling are all reasonable starting points.
A Practical Twelve Week Start
If you want something concrete:
Weeks one and two. Twenty minutes of easy walking, three times a week. Easy enough to hold a full conversation.
Weeks three and four. Thirty minutes, three times a week, same comfortable effort.
Weeks five to eight. Forty minutes, three times a week. You can lift the effort slightly, but stay well short of maximum.
Weeks nine to twelve. Maintain forty minutes three times weekly, adding variety if you want. Cycling, swimming, an exercise class, anything you will keep doing.
Track your migraine days throughout, because that is the outcome that matters and because you will not be able to judge it from memory.
Expect it to take time. Studies in this area typically run over weeks to months before measuring results. Judging after a fortnight tells you very little.
The Benefit That Does Not Appear in the Headline Numbers
One of the reviews on exercise and migraine made a point worth repeating.
It noted that exercise improves migraine self efficacy and internalizes the locus of control, which in turn reduces migraine burden.
In plain terms: there is a meaningful difference between someone who believes migraine is something that happens to them and someone who believes there are things they can do that influence it. The second person tends to do better, and taking regular exercise is one of the things that shifts people from the first position to the second.
That is not a substitute for effective treatment. But for a condition where so much feels outside your control, it matters.
What This Does Not Replace
We want to be clear about scope, because this is a medical condition and we are a physical therapy clinic.
We do not diagnose migraine and we do not prescribe. Diagnosis, preventive medication, acute treatment and the overall management plan all belong with your physician.
Exercise is an addition, not a replacement. If you are on preventive medication, keep taking it unless your physician advises otherwise. The reviews specifically describe exercise as something that may add benefit alongside a conventional regimen.
And if your attacks are frequent or severe, exercise alone is very unlikely to be sufficient, and that is a conversation to have with your doctor rather than something to solve with a walking program.
One more thing worth raising with your physician: if you are taking acute headache medication on many days each month, that pattern can itself contribute to more frequent headaches. It is worth counting your days and mentioning the number, and it is not something to change on your own.
Headaches That Need Medical Attention
Some headaches are not migraines and need urgent assessment.
Call 911 or go to an emergency department for:
A sudden, severe headache that reaches maximum intensity within seconds or minutes.
Headache with fever, neck stiffness or a rash.
Headache with weakness, numbness, facial drooping, difficulty speaking, confusion, vision loss or loss of balance.
Headache following a head injury, particularly with drowsiness or vomiting.
A severe headache during pregnancy or shortly after giving birth, especially with visual disturbance, swelling or upper abdominal pain.
Contact your physician promptly for a new headache pattern starting after age 50, headaches that are progressively worsening, headache that is worse lying down or wakes you from sleep, headache with a history of cancer or a weakened immune system, or any significant change in your usual pattern.
Let Us Build Something You Can Sustain
The hardest part of using exercise for migraine is starting at the right level and progressing without provoking attacks along the way. That is exactly the part we can help with.
Morgain Physical Therapy offers a Free Discovery Visit at no cost and no obligation. You will get an assessment of your current fitness and movement here in Grand Forks, an honest discussion of what exercise can and cannot do for migraine, and a program built to start where you actually are.
We work alongside your physician, not instead of them.
Book your Free Discovery Visit today. Or call us on (701) 599-3848.