Exercise on period days: how to train through the reproductive years
Yes, exercise on period days is safe and often helpful for most women in the reproductive years: if you feel well, your usual session can go ahead, and on a heavier first day a gentle walk or easy ride still counts. A sensible week holds 2–4 strength sessions and 2–3 hours of easy cardio, scaled to how you feel on the day.
These are the years when muscle, fitness and bone respond well to training, and also the years of monthly cycles, possible pregnancies and recovery after birth. A plan that bends around all of that, instead of stopping for it, is one you can keep going.
Is exercise on period days a good idea?
Yes, for most women training through a period is a good idea, and the plan rarely needs more than small changes. A 2020 review by McNulty and colleagues (78 studies) found that performance may dip only trivially in the days around menstruation. The evidence was low quality and varied widely between women, so the authors suggest a personal approach over fixed rules for each phase.
Many women find it helps to note energy, pain and flow for a few cycles, then shift the hardest session by a day or two if the same day keeps feeling heavy.
If you are actively trying to conceive, training is one part of a wider picture, and our pages on sleep and lifestyle when trying to conceive and fertility by age cover the rest.
The training table and an example week
| Type | How often | How | Main benefits |
|---|---|---|---|
| Strength training | 2–4 sessions a week | Compound lifts first (squat, hinge, press, row, pull), then isolation work. 3–4 sets of 6–12 reps, stopping 1–3 reps short of failure.Heavy sessions tend to go best when you have eaten. | Progress by adding weight or reps over time. |
| Impact and jumps | 2–3 times a week, for a few minutes | Jumps, skipping, hops or running.Running counts too. | Most effective while bone is still reaching its peak. |
| HIIT / sprints | 1–2 sessions a week | For example, 4–8 rounds of 30 seconds hard with 2 minutes easy, or 4 rounds of 4 minutes hard.A light snack beforehand helps. | Fitness (VO2max) and insulin sensitivity. |
| Zone 2 cardio | 2–3 hours a week | Brisk walking, running, cycling or swimming at a pace you can talk through.If you can chat, the pace is about right. | Meets the adult guideline of at least 150 minutes of moderate activity a week. |
| Daily steps | 7,000–10,000 a day | Walking spread through the day.Especially after meals. | Steady activity between sessions. |
| Pelvic floor | Daily, especially in and after pregnancy | 3 sets of 8–12 slow squeezes, plus some quick ones.A pelvic floor physical therapist (a pelvic health physiotherapist in the UK) can help. | Leaking during exercise is common but not normal, and support is available. |
| In pregnancy | 150 minutes a week | Keep up moderate cardio and strength work.Many women step back from contact sports and fall-risk activities; your midwife or OB-GYN's advice comes first. | Lower risk of gestational diabetes and pre-eclampsia. |
| After birth | A gradual return | Pelvic floor work and walking early on, then low-impact work after the postpartum checkup (the postnatal check in the UK), usually by 6–12 weeks.Return-to-running guidance suggests waiting until about 12 weeks. | Builds back in stages. |
| Rest days | At least 1–2 a week | Easy walking only.Place them wherever your week needs them. | Recovery between harder sessions. |
What does a balanced training week look like in these years?
The example week alternates lifting with cardio: Monday, Wednesday and Friday are strength days (with jumps added to Wednesday's upper body work), Tuesday and Saturday are easy Zone 2, Thursday is the single hard interval session, and Sunday is rest. That spacing gives each hard effort an easier day on either side, and it leaves room to slide a session by a day when a period or a busy week asks for it. For the years before this one, see exercise in puberty, and for the years after, perimenopause exercise. Our overview of exercise for women shows how the pieces fit together across life.
Each piece has its own guide. The guide to strength training for women walks through the lifts and how to progress them, the page on HIIT exercises for women covers interval formats, and pelvic floor exercises explains how a squeeze should feel. None of it needs to arrive at once; two lifting days and a daily walk are a good place to start, in line with the US adult guidance of at least 2 days of muscle strengthening a week.
What changes in pregnancy, after birth, or when periods hurt or go missing?
In pregnancy, the weekly shape often stays and the feel of it changes. Many women find they lower the load on lifts and choose walking or swimming over jumps as the months go on, always with their midwife's or OB-GYN's guidance. Our guide to exercise in pregnancy goes through the options. After birth, the postpartum checkup is a natural moment to ask what is next, and postpartum exercise lays out the gradual return step by step.
Cramps are common, and many women find gentle movement a good place to start; the page on menstrual cramps goes through the options. If periods stop during hard training, that is worth raising with your doctor, and our RED-S page explains the reasons it can happen.
Facts
Common questions
Can you exercise on period?
Yes, running, lifting, swimming and cycling all stay open to you. For the practical side, a fresh pad or tampon (sanitary towel in the UK) just before you start and again afterwards keeps things comfortable, and many women pack a spare. If flow feels unusually heavy, it is worth mentioning at your next doctor's visit.
Should i workout on the first day of my period?
You can, and the first day is a good one to let your warm-up decide. Many women start their usual warm-up and see how cramps and energy respond, carrying on if they ease. If the planned session is a heavy lower-body day, lighter weights or fewer sets are a gentle way to keep the habit while your body asks for less.
Is exercise good on period?
For period pain, the evidence is encouraging. A network meta-analysis of 29 trials (1,808 participants) found relaxation, strength, aerobic, yoga, mixed and Kegel exercise all reduced menstrual pain versus control after 8 weeks. Choosing the type you will actually enjoy and repeat is a good place to start.
Is it bad to exercise on your period?
For most women it is not. What deserves attention is a pattern that persists: pelvic pain or irregular cycles that keep returning are a reason to ask your OB-GYN (your GP in the UK) for a referral, and a short note of dates and symptoms can make that visit easier.
Can exercise bring on period?
A late period is best looked into on its own terms. If pregnancy is possible, a test is a sensible first step. If periods have stopped while you are training hard, your OB-GYN (your GP in the UK) is a good place to start, and our RED-S page explains the reasons this can happen.
Next steps
A good place to start is the example week: pick the days that suit your schedule, keep one or two for rest, and let the next few cycles show you where it feels easy and where it asks for a lighter touch. If anything in the red-flag list sounds familiar, a doctor or pelvic floor physical therapist can help you plan around it. From there the mix is yours to choose, because training in these years is not one size fits all.
See a doctor promptly if you have
- Pain that stops you training or going about your day
- Missing periods while training hard
- Not pregnant after 12 months of trying (6 months if 35 or over)
- Pelvic pain or irregular cycles that persist: ask for a referral
Also in the reproductive years
The same topic in the stage before and after
Sources
The guidelines and studies this page draws on.
- McNulty et al., Effects of Menstrual Cycle Phase on Exercise Performance in Eumenorrheic Women (meta-analysis), Sports Medicine (2020)
- Tsai et al., Comparative Effectiveness of Different Exercises for Reducing Pain Intensity in Primary Dysmenorrhea, Sports Medicine – Open (2024)
- Morton et al., protein and resistance training (meta-analysis), British Journal of Sports Medicine (2018)
- Adult Activity: An Overview, CDC (2024)
- WHO Guidelines on Physical Activity and Sedentary Behaviour, World Health Organization (2020)
- ACOG: physical activity and exercise during pregnancy and the postpartum period, American College of Obstetricians and Gynecologists (2020)
- Goom, Donnelly and Brockwell: returning to running postnatal guideline, Athletics NI-hosted PDF (2019)