What actually helps period cramps?

Three approaches have reasonable evidence. Non-steroidal anti-inflammatory drugs such as ibuprofen or naproxen are effective and work best taken at the first sign of pain. Exercise reduces pain intensity in Cochrane-reviewed trials, though those trials are small and low quality. Local heat applied to the abdomen is widely used, low risk and helpful for many women. Combined hormonal contraception is a common medical option when cramps are severe.

Does exercise help period pain or make it worse?

A Cochrane review of exercise for dysmenorrhea found that exercise reduced pain intensity compared with no treatment, and the authors were clear that the underlying evidence is low quality. In practice, gentle movement such as walking, stretching and low-impact work is what most women tolerate during heavy symptoms, and it is more sustainable than trying to train through it or skipping entirely.

Why do I get cramps at all?

The uterine lining produces prostaglandins as it breaks down. Prostaglandins cause the uterus to contract to expel the lining, and they also constrict local blood vessels. Higher prostaglandin activity is associated with stronger contractions and more pain. This is why anti-inflammatory drugs, which reduce prostaglandin production, target the cause rather than only masking the sensation.

When is period pain not normal?

When it stops you doing normal activities, when over-the-counter pain relief taken correctly does not control it, when it is getting worse over time, when it starts days before bleeding or continues after it, or when it comes with pain during sex or bowel movements. Those patterns can indicate endometriosis, adenomyosis or fibroids, all of which are diagnosable conditions rather than bad luck.

Does cycle-based training reduce period pain?

We would rather be straight about this. In our own study of 1,091 members, women who adjusted their exercise to their cycle reported better energy, less bloating and more regular cycles than those who did not, but there was no significant difference in period pain between the two groups. The exercise evidence for pain relief comes from the general dysmenorrhea literature, not from anything specific to phase-based training.

Should I stop working out during my period?

There is no physiological reason to stop if you feel able. Most women train lighter during heavy symptom days because of how they feel rather than because of a limit on what their body can do. Gentle movement is often more comfortable than rest, and if you feel fine there is no reason to hold back.

Symptoms

Period Pain: What Actually Helps, and What Pain Is Telling You

Exercise, anti-inflammatories and heat all have evidence behind them for menstrual cramps. Severe pain that stops your life is a different question, and it is the one most often dismissed.

28 WellnessAugust 11, 20268 min read

Key takeaways

Period pain is common rather than universal, and prevalence estimates vary widely across studies, with a substantial minority reporting pain severe enough to limit daily activity.
Exercise has Cochrane-level evidence for reducing menstrual pain intensity, with the caveat that the trials are small and of low quality.
Non-steroidal anti-inflammatory drugs are effective for menstrual cramps and work best started at the first sign of pain rather than after it is established.
Cramps are driven largely by prostaglandins causing uterine contraction, which is why anti-inflammatories that block prostaglandin production are the targeted treatment.
Pain that stops you working, that is not controlled by over-the-counter medication, or that is getting worse over time is a reason to see a clinician, not a threshold of toughness.

Period pain occupies a strange position. It is common enough that women are told it is normal, and it is treated so casually that the cases which are not normal often go unexamined for years.

Both parts of this article matter. Ordinary cramps respond to things you can do yourself. Severe pain is a signal, and the most useful thing we can tell you is where the line between the two sits.

Why cramps happen

As the uterine lining breaks down it releases prostaglandins, lipid compounds that make the uterus contract to expel it and constrict local blood vessels while doing so. Stronger prostaglandin activity means stronger contractions, less local blood flow, and more pain. The same compounds are part of why some women get diarrhea, nausea or dizziness with their period.

That mechanism is worth knowing because it explains why one treatment works better than the others.

What has evidence behind it

Anti-inflammatories, taken early

Non-steroidal anti-inflammatory drugs reduce prostaglandin production, which is upstream of the contraction. A Cochrane review found them effective for menstrual pain, more so than paracetamol.^[3] The practical detail most women are never told is timing: they work considerably better started at the first sign of pain than after it is fully established, because it is easier to prevent prostaglandin production than to undo its effect. Use them as directed and check with a pharmacist or doctor if you have stomach, kidney or asthma considerations.

Exercise

A Cochrane review of exercise for dysmenorrhea found that exercise reduced pain intensity compared with no treatment. The reviewers were explicit that the trials were small and the quality of evidence low.^[2] That is a real finding with a real caveat attached, and it is stronger than the evidence behind most things sold for cramps.

Heat

Local heat on the lower abdomen is inexpensive, low risk and helps many women. It is the intervention with the best ratio of comfort to downside, and there is no reason not to try it.

Hormonal options

Combined hormonal contraception is a standard medical treatment for painful periods because it thins the uterine lining and reduces prostaglandin load. It is a conversation with a clinician, and it has trade-offs worth understanding, including that it suppresses the natural cycle you may be tracking.

What our own research did and did not find

In our study of 1,091 members, women who adjusted their exercise to their cycle reported better energy, less bloating, fewer cravings and more regular cycles than those who did not. There was no significant difference in period pain between the groups.^[5] We say so because a company that only reports its favorable results is not worth believing on the others. Cycle-based wellness is not a treatment for dysmenorrhea, and we do not present it as one.

The part that gets dismissed

Prevalence estimates for dysmenorrhea vary widely across studies, and a substantial minority of women report pain severe enough to limit daily activity.^[1] That group is where the real problem lies, because severe pain is frequently normalized, both by women themselves and by the people they report it to.

See a clinician if any of the following are true.

Pain stops you going to work, school or normal activity.
Over-the-counter pain relief, taken correctly and early, does not control it.
Pain is worse than it used to be, or bleeding is getting heavier over time.
Pain begins days before bleeding or continues after it ends.
You have pain during sex, or with bowel movements or urination during your period.
You are also struggling to conceive.

Those patterns are associated with endometriosis, adenomyosis and fibroids. Endometriosis in particular carries a documented burden on quality of life and work productivity across countries, and it is frequently identified late.^[4] Asking directly whether something structural could be causing your pain is a reasonable question to put to a doctor, and pushing for an answer when pain is severe is not being difficult.

What we recommend in practice

Treat early rather than heroically. If you know your first day is painful, address it at the first twinge instead of waiting to see how bad it gets.
Move gently rather than not at all. Walking, stretching and low-impact work are what most women tolerate and what the trial evidence used.
Track it. Pain severity logged across cycles is the single most useful thing you can bring to a doctor, because it converts a vague complaint into a pattern.
Do not use tolerance as a measure of health. Being able to cope with severe pain is not the same as the pain being acceptable.

This article is general information, not medical advice, and it is not a substitute for assessment by a clinician who can examine you.

Common questions

What actually helps period cramps?: Three approaches have reasonable evidence. Non-steroidal anti-inflammatory drugs such as ibuprofen or naproxen are effective and work best taken at the first sign of pain. Exercise reduces pain intensity in Cochrane-reviewed trials, though those trials are small and low quality. Local heat applied to the abdomen is widely used, low risk and helpful for many women. Combined hormonal contraception is a common medical option when cramps are severe.
Does exercise help period pain or make it worse?: A Cochrane review of exercise for dysmenorrhea found that exercise reduced pain intensity compared with no treatment, and the authors were clear that the underlying evidence is low quality. In practice, gentle movement such as walking, stretching and low-impact work is what most women tolerate during heavy symptoms, and it is more sustainable than trying to train through it or skipping entirely.
Why do I get cramps at all?: The uterine lining produces prostaglandins as it breaks down. Prostaglandins cause the uterus to contract to expel the lining, and they also constrict local blood vessels. Higher prostaglandin activity is associated with stronger contractions and more pain. This is why anti-inflammatory drugs, which reduce prostaglandin production, target the cause rather than only masking the sensation.
When is period pain not normal?: When it stops you doing normal activities, when over-the-counter pain relief taken correctly does not control it, when it is getting worse over time, when it starts days before bleeding or continues after it, or when it comes with pain during sex or bowel movements. Those patterns can indicate endometriosis, adenomyosis or fibroids, all of which are diagnosable conditions rather than bad luck.
Does cycle-based training reduce period pain?: We would rather be straight about this. In our own study of 1,091 members, women who adjusted their exercise to their cycle reported better energy, less bloating and more regular cycles than those who did not, but there was no significant difference in period pain between the two groups. The exercise evidence for pain relief comes from the general dysmenorrhea literature, not from anything specific to phase-based training.
Should I stop working out during my period?: There is no physiological reason to stop if you feel able. Most women train lighter during heavy symptom days because of how they feel rather than because of a limit on what their body can do. Gentle movement is often more comfortable than rest, and if you feel fine there is no reason to hold back.

References

1.Ju H, Jones M, Mishra G. The prevalence and risk factors of dysmenorrhea. Epidemiologic Reviews. 2014;36(1):104-113. https://doi.org/10.1093/epirev/mxt009
2.Armour M, Ee CC, Naidoo D, Ayati Z, Chalmers KJ, Steel KA, de Manincor MJ, Delshad E. Exercise for dysmenorrhoea. Cochrane Database of Systematic Reviews. 2019;(9):CD004142. https://doi.org/10.1002/14651858.CD004142.pub4
3.Marjoribanks J, Ayeleke RO, Farquhar C, Proctor M. Nonsteroidal anti-inflammatory drugs for dysmenorrhoea. Cochrane Database of Systematic Reviews. 2015;(7):CD001751. https://doi.org/10.1002/14651858.CD001751.pub3
4.Nnoaham KE, Hummelshoj L, Webster P, d'Hooghe T, de Cicco Nardone F, de Cicco Nardone C, Jenkinson C, Kennedy SH, et al. Impact of endometriosis on quality of life and work productivity: a multicenter study across ten countries. Fertility and Sterility. https://doi.org/10.1016/j.fertnstert.2019.08.082
5.Brillhart M, Gassen J, Lin L, Hugoboom G, Hugoboom B, Hill SE. Does a menstrual cycle phase-based approach to fitness and nutrition improve outcomes for women? A study of 28 Wellness users. PsyArXiv preprint. 2025. Not peer reviewed. https://osf.io/preprints/psyarxiv/39rwn_v1

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