Menstrual Cycle Training: Should You Periodise by Phase?

Few training questions have gone from fringe to mainstream as fast as this one: should a woman schedule her heavy lifting around her menstrual cycle? Coaching apps now build "cycle phases" into their programming, and the idea sounds physiologically tidy. The research, when you read it in full, tells a more grounded story.

Oestrogen and progesterone rise and fall across a typical 28-day cycle, and both hormones interact with muscle, connective tissue, and the nervous system. It is reasonable to ask whether those swings change how much strength you can express on a given day, and whether timing your hardest work to a particular phase builds more muscle over months. This article works through the strongest available evidence, meta-analyses, systematic reviews, and controlled trials, and lands on what actually moves the needle.

Why this question matters

Most resistance-training research was built on men. For decades, findings from male participants were simply assumed to transfer, and the specific physiology of women who menstruate was left largely unstudied. The correction is overdue and welcome. But the correction has also produced a lot of confident advice that runs ahead of the data, and phase-based programming is the clearest example.

The practical stakes are real. If cycle phase meaningfully dictated when to train hard, a woman would need to restructure her week around it, and any session that fell in the "wrong" phase would be compromised. If it does not, then that restructuring adds friction and anxiety for no return. Getting the answer right is a matter of both performance and peace of mind.

Does strength really rise and fall by phase?

Start with acute performance, meaning what you can lift or produce on a single day. The largest synthesis to date pooled 78 studies in a systematic review and network meta-analysis and found that exercise performance was, at most, trivially reduced during the early follicular phase, the days around menstruation, compared with every other phase.¹ The effect size was small enough that the authors declined to issue blanket guidance and recommended an individualised approach instead.

A more recent meta-analysis focused specifically on maximal strength added nuance. Across 22 studies, it reported that the early follicular phase tended to be the least favourable window, with isometric and dynamic maximal strength peaking in the late follicular phase and isokinetic strength peaking around ovulation.² The differences were mostly small to medium and measured under controlled laboratory conditions. Taken together, these reviews suggest that if there is a low point, it sits early in the cycle, but the day-to-day variation for most people is modest and easily swamped by sleep, nutrition, and stress.

Does phase-based training build more muscle?

Acute performance on a single day is one question. Whether concentrating your training volume in a particular phase produces more muscle and strength over months is the question that actually matters for programming, and it is where the popular narrative got ahead of itself.

The idea has real roots. Two early controlled studies used a clever within-participant design, training one leg mostly in the follicular phase and the other mostly in the luteal phase. One reported greater gains in maximal isometric force and muscle diameter from follicular-based training, and recommended women periodise around their cycle.⁴ Another found that concentrating high-frequency leg training into the first two weeks of the cycle produced larger improvements in squat, jump, and leg lean mass than luteal-based or regular training.⁵ These findings are why the concept spread.

The trouble is that later, better-controlled work has not held them up. A 2020 systematic review of the whole literature found the studies conflicting and frequently limited by small samples and methodological problems, and concluded only that female hormones may affect training responses, not that phase-based programming reliably helps.³ The most rigorous test arrived in 2026. In a randomised, unilateral trial, 24 eumenorrheic women trained across three consecutive cycles, with each leg assigned to continuous training, high volume in the follicular phase, or high volume in the luteal phase. Every training condition beat the untrained control leg for thigh lean mass, muscle cross-sectional area, and one-repetition-maximum strength, and there were no differences between the three training approaches.⁶ Training volume-load, not cycle timing, drove the gains.

That result fits a broad systems-physiology review that examined the menstrual cycle and hormonal contraceptives across many outcomes and concluded that the differences between follicular and luteal phases are not associated with meaningful changes in muscular hypertrophy in response to resistance training.⁷ The honest summary is that phase-based periodisation is not a lever that reliably adds muscle or strength beyond simply training hard and consistently.

What about the pill?

Roughly a third of the reproductive-age women who train use hormonal contraceptives, which flatten the natural hormone profile and replace it with a steadier synthetic one. If endogenous hormones mattered greatly, the pill should change training outcomes. It does not appear to.

A systematic review with multilevel meta-analysis of studies directly comparing oral-contraceptive users with non-users found no significant effect of pill use on hypertrophy, power, or strength adaptations to resistance training, and stated there was no evidence-based reason to advocate for or against the pill on those grounds.⁸ A separate meta-analysis of 42 studies on oral contraceptives and exercise performance reached a compatible conclusion: any group-level effect was most likely trivial, performance was consistent across the pill cycle, and an individualised approach was more appropriate than general rules.⁹ For the strength-focused lifter, contraceptive status is not a variable that needs to steer programming.

Recovery, soreness, and feeling off

None of this means the cycle is invisible in training. Where the evidence is more consistent is in recovery and perception rather than raw adaptation. A meta-analysis of exercise-induced muscle damage across the cycle found that delayed-onset muscle soreness and acute strength loss after hard sessions were greater in the early follicular phase, when oestrogen and progesterone are both low, suggesting that recovery may be slightly more taxed in those days.¹⁰ That is a reasonable input for autoregulating rest, not a reason to skip training.

Measurement itself is a trap worth naming. One controlled study tracked muscle cross-sectional area across two full cycles and found that it fluctuated enough, likely through fluid shifts, that short-term changes could not be cleanly attributed to training at all.¹¹ Body measurements taken on different cycle days are not comparing like with like, which matters for anyone judging progress week to week.

Perception deserves respect too. In a global survey of nearly 1,600 women rugby players, more than one in ten reported that contraceptive or cycle-related symptoms altered their training and performance, and many tracked those symptoms deliberately.¹² Cramping, fatigue, and mood are lived experiences that shape how a session feels, even when average force output barely moves. The goal is to distinguish a genuine drop in capacity from a day that simply feels harder.

What this means in practice

The weight of the evidence points away from rigid, calendar-driven periodisation and toward responsive training. Rather than deciding in advance that a Tuesday in the early follicular phase must be a light day, it is more defensible to train consistently and let the actual session tell you how much you have.

This is where objective feedback earns its place. Soreness and mood can make a strong day feel weak, while adrenaline can mask genuine fatigue. A wearable that reads muscle output and recovery directly, session to session, helps separate a real dip in force from a day that merely feels off, so a lifter can hold load when the signal is strong and back off when it is not, on any day of the cycle. That is autoregulation grounded in what the muscle is doing, not in a date. For the small minority whose symptoms clearly disrupt certain days, a light personal adjustment is entirely reasonable, but as a preference, not a rule the physiology demands.

Key takeaways

• Across the best syntheses, cycle phase has at most a trivial effect on day-to-day strength, with the early follicular phase the likeliest low point.¹ ²

• The strongest controlled trial to date found phase-based training offered no hypertrophy or strength advantage over consistent training; volume-load drove the gains.⁶

• Hormonal contraceptive use does not meaningfully change strength, power, or muscle adaptations, so it need not steer programming.⁸ ⁹

• Recovery and soreness after hard sessions may be slightly worse in the early follicular phase, a useful input for adjusting rest.¹⁰

• Muscle measurements fluctuate across the cycle independently of training, so judge progress over longer windows, and let measured output guide the day rather than the calendar.¹¹

References

1. McNulty, K. L., Elliott-Sale, K. J., Dolan, E., Swinton, P. A., Ansdell, P., Goodall, S., Thomas, K., & Hicks, K. M. (2020). The effects of menstrual cycle phase on exercise performance in eumenorrheic women: A systematic review and meta-analysis. Sports Medicine, 50(10), 1813–1827. https://doi.org/10.1007/s40279-020-01319-3

2. Niering, M., Wolf-Belala, N., Seifert, J., Tovar, O., Coldewey, J., Kuranda, J., & Muehlbauer, T. (2024). The influence of menstrual cycle phases on maximal strength performance in healthy female adults: A systematic review with meta-analysis. Sports, 12(1), 31. https://doi.org/10.3390/sports12010031

3. Thompson, B., Almarjawi, A., Sculley, D., & Janse de Jonge, X. (2020). The effect of the menstrual cycle and oral contraceptives on acute responses and chronic adaptations to resistance training: A systematic review of the literature. Sports Medicine, 50(1), 171–185. https://doi.org/10.1007/s40279-019-01219-1

4. Sung, E., Han, A., Hinrichs, T., Vorgerd, M., Manchado, C., & Platen, P. (2014). Effects of follicular versus luteal phase-based strength training in young women. SpringerPlus, 3, 668. https://doi.org/10.1186/2193-1801-3-668

5. Wikström-Frisén, L., Boraxbekk, C. J., & Henriksson-Larsén, K. (2017). Effects on power, strength and lean body mass of menstrual/oral contraceptive cycle based resistance training. The Journal of Sports Medicine and Physical Fitness, 57(1–2), 43–52. https://doi.org/10.23736/S0022-4707.16.05848-5

6. D'Souza, A. C., Van Every, D. W., Bhinder, A., Elango, S., Lamont, G. A. C., Lees, M. J., Lim, C., McKendry, J., Newbold, J. P., Naphin, C., Rebalka, I. A., Roxburgh, L., Suthaharan, A., Wilson, B. K., & Phillips, S. M. (2026). Menstrual cycle phase does not influence training-induced muscle hypertrophy or strength: A randomized controlled trial. Medicine & Science in Sports & Exercise. Advance online publication. https://doi.org/10.1249/MSS.0000000000004031

7. D'Souza, A. C., Wageh, M., Williams, J. S., Colenso-Semple, L. M., McCarthy, D. G., McKay, A. K. A., Elliott-Sale, K. J., Burke, L. M., Parise, G., MacDonald, M. J., Tarnopolsky, M. A., & Phillips, S. M. (2023). Menstrual cycle hormones and oral contraceptives: A multimethod systems physiology-based review of their impact on key aspects of female physiology. Journal of Applied Physiology, 135(6), 1284–1299. https://doi.org/10.1152/japplphysiol.00346.2023

8. Nolan, D., McNulty, K. L., Manninen, M., & Egan, B. (2024). The effect of hormonal contraceptive use on skeletal muscle hypertrophy, power and strength adaptations to resistance exercise training: A systematic review and multilevel meta-analysis. Sports Medicine, 54(1), 105–125. https://doi.org/10.1007/s40279-023-01911-3

9. Elliott-Sale, K. J., McNulty, K. L., Ansdell, P., Goodall, S., Hicks, K. M., Thomas, K., Swinton, P. A., & Dolan, E. (2020). The effects of oral contraceptives on exercise performance in women: A systematic review and meta-analysis. Sports Medicine, 50(10), 1785–1812. https://doi.org/10.1007/s40279-020-01317-5

10. Romero-Parra, N., Cupeiro, R., Alfaro-Magallanes, V. M., Rael, B., Rubio-Arias, J. Á., Peinado, A. B., & Benito, P. J. (2021). Exercise-induced muscle damage during the menstrual cycle: A systematic review and meta-analysis. Journal of Strength and Conditioning Research, 35(2), 549–561. https://doi.org/10.1519/JSC.0000000000003878

11. Dias, N. F., Bergamasco, J. G. A., Scarpelli, M. C., Silva, D. G., Chaves, T. S., Bittencourt, D., Medalha, R. A., Carello Filho, P. C., De Souza, E. O., Ugrinowitsch, C., & Libardi, C. A. (2024). Changes in muscle cross-sectional area during two menstrual cycles may not be exclusively attributed to resistance training. Applied Physiology, Nutrition, and Metabolism, 49(12), 1729–1739. https://doi.org/10.1139/apnm-2024-0004

12. Brown, N., Roldan-Reoyo, O., Williams, G. K. R., Stodter, A., Moore, I. S., Mackintosh, K. A., McNarry, M. A., & Williams, E. M. P. (2023). Profiling hormonal contraceptive use and perceived impact on training and performance in a global sample of women rugby players. International Journal of Sports Physiology and Performance, 18(9), 937–943. https://doi.org/10.1123/ijspp.2023-0137