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How should you work out during ovulation?

By the HerShape team · Last updated October 14, 2026 · 9 min read

Train by how you feel. If you feel strong in the middle of your cycle, it's a good time for your heaviest sets or a test day, but studies find that strength barely changes across the cycle, so there's no need to squeeze your hardest training into ovulation. The change worth making is a short warm-up with landing practice and leg strength work, and it pays off every week of the month, not only this one.

What happens around ovulation

Your cycle starts on the first day of your period. Through the follicular phase, estrogen climbs as an egg matures and reaches its peak around ovulation. Then a surge of luteinizing hormone (LH) triggers the ovary to release the egg. Cleveland Clinic puts ovulation around day 14 of a 28-day cycle and says the egg survives about 12 to 24 hours. After that, progesterone rises and you're in the luteal phase.

Training plans usually call the few days around this point the ovulatory phase. Our cycle syncing workouts guide uses days 14 to 16 of a 28-day cycle, scaled to your own cycle length.

The catch is that you can't see ovulation on a calendar. Cleveland Clinic notes that the timing varies because cycle lengths vary, and anything from 21 to 35 days counts as normal. Two ways to get closer:

Ovulation tests. These urine tests detect the LH surge. According to Cleveland Clinic, a positive result means you'll usually ovulate within 36 hours.
Body signs. Some people notice clear, slippery discharge, breast tenderness, bloating or a twinge on one side of the lower belly. Many notice nothing at all.

For training, a rough window is enough. Think of it as the middle stretch of your cycle: the few days either side of when you expect to ovulate.

Are you actually stronger at ovulation?

Probably not by much. The idea comes from the hormones: estrogen is near its peak and progesterone is still low. But the studies that measured performance directly found small differences at most.

Strength. A 2020 meta-analysis in the Journal of Science and Medicine in Sport pooled 21 studies of women with regular cycles. It compared the early follicular phase (your period days), the ovulatory phase and the mid-luteal phase on maximal strength, isokinetic strength (measured on a machine at a fixed speed) and explosive strength. Every difference was small or trivial, and none was statistically significant. The authors concluded that strength is minimally affected by the hormone changes of the cycle, and they flagged a high risk of bias in parts of the research.
Performance overall. A 2020 meta-analysis in Sports Medicine covered 78 studies of strength and endurance outcomes. Performance was trivially lower in the early follicular phase than in the rest of the cycle. The biggest gap was between the early and late follicular phase, the days leading up to ovulation, and it was still trivial. When the authors ranked the phases, ovulation, the late follicular phase and every part of the luteal phase came out almost exactly level. They rated the overall quality of evidence as low, and only 8% of the studies as high quality.

So the "peak week" is something some women feel, not a reliable average. That still counts for something. Our phase guides put heavier sets here because many people feel their best mid-cycle and the weeks that follow can feel harder, not because research shows a dependable strength peak. If you feel great, use it. If you don't, you lose nothing by training as usual. Our review of whether cycle syncing works goes through the wider evidence.

What about loose ligaments and knee injuries?

Most ovulation workout articles cover this in one line: your joints are looser, so warm up. The research behind that line is more interesting and a lot less certain.

The anterior cruciate ligament (ACL) is a key ligament inside the knee, and it has receptors for estrogen and other sex hormones. Lab studies have found that exposing ACL cells to estrogen changes how they make collagen. That's why researchers suspected that ovulation, when estrogen is high, could be a riskier time for the knee. Here's what three reviews found:

Laxity goes up a little. A 2017 meta-analysis in the Orthopaedic Journal of Sports Medicine pooled six studies and found the knee was slightly looser in the ovulatory phase than in the follicular phase, by about 0.36 mm on average. The authors said it's unclear whether a difference that small matters clinically.
Injury timing is murky. The same review found only five studies on when in the cycle ACL injuries happened, four of them rated poor quality. Two pointed to the ovulatory phase, two to the days before ovulation and one to the follicular phase. Four of the five found the luteal phase was the least linked to injuries. The authors rated the overall strength of this evidence as very low.
Movement studies disagree. A 2023 systematic review in PLOS One looked at seven studies that confirmed each woman's cycle phase with hormone tests or ovulation kits, then measured how she moved during jump-landing and cutting tasks. Four found no difference between phases. Two pointed to the mid-luteal phase, not ovulation, as the riskier time. The authors called the evidence inconclusive and wrote, "Practitioners should be cautious manipulating their physical preparation, injury mitigation, and screening practises based on current evidence."

Most of the injury studies involved skiers and school or college athletes, not people lifting in a gym. The practical upshot: there's no good reason to skip heavy lifting, jumping or your sport around ovulation. Since nobody can say which week, if any, carries more knee risk, it makes more sense to look after your knees all month.

The warm-up worth keeping

Here the evidence is much stronger. A 2019 meta-analysis in the American Journal of Sports Medicine pooled 18 controlled trials of injury prevention training in 27,231 female athletes. The programs cut the risk of an ACL injury from about 1 in 54 to 1 in 111. Sessions averaged about 24 minutes, roughly 2.5 times a week.

Programs worked better when each session included more of two things: landing stabilization, which means jumping or hopping and then holding the landing, and lower-body strength exercises such as Nordic hamstring curls, lunges and calf raises. The effect was largest in school-age athletes and smaller, though still clear, in college and professional athletes.

Those programs were tested in team sports, and the version below isn't one of them. It's a shorter gym warm-up built from the same ingredients, and it takes about 12 minutes. Do it before every lower-body or jumping session, all month. Around ovulation, if you've planned a heavy day, add an extra ramp-up set or two.

Step	What to do	Why it's there
1. Get warm	3 to 5 minutes on a bike or rower, or a brisk walk	Eases you into the session
2. Leg strength	2 sets of 8 reverse lunges per leg, then 12 slow calf raises	One of the two ingredients linked to better results
3. Hamstrings	1 or 2 sets of 3 to 5 Nordic lowers, with a partner holding your ankles or your feet hooked under a padded bar. Lower yourself as slowly as you can.	Recommended in the 2019 review
4. Land and hold	2 sets of 5 small jumps forward onto both feet. Land softly with your knees in line with your toes and hold for 2 seconds. Move to single-leg hops when these feel steady.	The other ingredient linked to better results
5. Ramp up	2 or 3 lighter sets of your first main lift before your working weight	Shows you how the weight moves today

Nordic lowers are hard. If you're new to them, lower only part of the way, or leave them out for a few weeks and keep the rest.

A sample week around ovulation

This week follows on from a follicular phase week, where you've been adding weight and volume. It has three strength sessions and one harder cardio session. Start each lower-body and jumping session with the warm-up above, then pick the column that matches the day you're having.

Day	Session	Feeling strong	Feeling off
Monday	Lower body: squats or trap-bar deadlifts, 4 sets of 4 to 6	Work up to one heavy set of 3, or add a little weight from last week	Last week's weight, 3 sets, stopping each with 2 or 3 reps left
Tuesday	Easy cardio, 30 to 40 minutes at a pace where you can still talk	As written	A walk
Wednesday	Upper body: presses, rows and pull-downs, 4 sets of 6 to 8	A small jump in weight on one lift	One set fewer per exercise
Thursday	Rest or mobility	Rest or mobility	Rest
Friday	Power and intervals: 4 sets of 3 box jumps or jump squats, holding each landing, then 6 rounds of 30 seconds hard and 90 seconds easy on a bike or rower	As written	Step-ups instead of jumps, and 20 minutes of steady cardio instead of intervals
Saturday	Full body: Romanian deadlifts, split squats and hip thrusts, 3 sets of 8 to 10	Add a set	2 sets each
Sunday	Rest or a long walk	As written	Rest

If you want to test a lift, a heavy set of 3 to 5 is a practical test for most people. Save true one-rep maxes for when you've tested them before and have a spotter or safety bars. In the luteal weeks that follow, keep the weights where they are and trim a set if training starts to feel harder.

If you'd rather not work out the dates yourself, HerShape estimates your phase from your last period and cycle length and plans training that fits it.

What to watch for

Ovulation pain. The NHS says it's common to have pain about 14 days before your period: a dull ache or sharp, sudden twinges on one side of your lower tummy, lasting from a few minutes to a day or two. If it isn't severe, a warm bath or an over-the-counter painkiller may be all you need. On a sore day, use the feeling-off column or rest. The NHS advises getting urgent medical advice if the pain is severe and painkillers haven't helped, if it keeps coming back, or if you think you may be pregnant. It also lists endometriosis, ovarian cysts and some infections among the conditions that can cause similar pain.
Knee pain, a pop or a knee that gives way. Stop the session. Swelling or a knee that won't hold your weight needs a medical check before you train on it again.
No ovulation to plan around. If you use hormonal contraception that stops ovulation, there's no ovulation week. Our guide to cycle syncing on birth control explains which methods do that and how to plan instead.
Pregnancy, trying to conceive, postpartum or pelvic pain. If any of these apply, or you have endometriosis, talk to a clinician about what kind of training suits you.

The bottom line

The middle of your cycle is a fine time to go heavy if you feel strong, but strength studies don't show a reliable ovulation peak, so don't build your month around hitting it. Knee laxity may rise slightly near ovulation, yet nobody has shown that it makes a particular week riskier. What does have good evidence behind it is training your landings and leg strength, a few minutes at a time, all month long. Think of ovulation week as an opportunity, not a deadline.

Sources

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