Exercise and fertility — getting the balance right when it matters most

Too much exercise impairs fertility. Too little does too. The research is clear that precision matters — and that the right exercise prescription can meaningfully improve your body’s environment for conception, whether you are trying naturally or going through assisted reproductive treatment.

1 in 6
Australian couples experience fertility challenges — making it one of the most common health issues affecting women of reproductive age
40%
Of fertility challenges are related to conditions with a modifiable exercise component — including PCOS, unexplained infertility and weight-related factors
Both ways
Over-exercise and under-exercise both impair fertility — precision in prescription is what makes the difference

Why does exercise matter for fertility?

Fertility is not just about reproductive anatomy. It is about the whole-body environment your reproductive system is operating in — the hormonal signals, the metabolic health, the inflammatory load, the stress response. Exercise influences all of these systems, which is why it is one of the most powerful and most underutilised tools in the fertility space.

The relationship between exercise and fertility is not linear though. Unlike most health conditions where more exercise is generally better, fertility has a window. Too much high-intensity exercise disrupts the hormonal axis that drives ovulation. Too little contributes to metabolic dysfunction that impairs egg quality and implantation. The prescription sits in the middle — and finding that middle requires clinical knowledge, not guesswork.

Whether you are trying to conceive naturally, managing a condition like PCOS or endometriosis that is affecting your fertility, or preparing for or going through an IVF or IUI cycle, the approach to exercise is different at each stage — and it matters.

A note on how we approach this work
Fertility journeys are emotionally complex. We understand that. Our role is to give you clinical clarity about what exercise can and cannot do, and to build a program that supports your body without adding another thing to manage. We meet you where you are.

What exercise influences

The body systems that connect exercise to fertility

Exercise does not directly cause or prevent conception. What it does is influence the systems that create the conditions for healthy ovulation, egg quality and implantation. Here is what we are working with.

hormone regulation

Exercise influences the hypothalamic-pituitary-ovarian axis — the signalling chain that drives ovulation. Too much stress from over-exercise suppresses this axis and disrupts or stops ovulation

insulin sensitivity

Poor insulin sensitivity — common in PCOS — disrupts ovulation and egg quality. Resistance training and aerobic exercise are the most effective tools for improving insulin sensitivity

inflammation

Chronic low-grade inflammation impairs implantation and embryo development. The right exercise dose reduces systemic inflammation — too much increases it

stress & cortisol

Chronically elevated cortisol suppresses reproductive hormones. Exercise at the right dose reduces cortisol — but high-intensity training without adequate recovery raises it significantly

body composition

Both very low and very high body fat percentage disrupt ovulation. Exercise supports healthy body composition — but extreme exercise for weight loss during a fertility attempt is counterproductive

mitochondrial function

Mitochondria — the energy-producing parts of cells — play a direct role in egg quality. Exercise improves mitochondrial function, which is one of the most significant cellular mechanisms linking exercise to fertility outcomes

THE CLINICAL APPROACH

How Exercise Physiology supports your fertility journey

Our role is not to promise outcomes — no one can do that. Our role is to optimise the biological environment your body is working in, reduce the barriers that exercise-related factors create, and support your overall health through what is often a demanding process

1

Identifying and addressing the underlying condition

Most fertility challenges have an underlying condition — PCOS, endometriosis, thyroid dysfunction, unexplained hormonal disruption. We address the exercise component of that condition specifically, not just fertility in isolation.

2

Optimising insulin sensitivity and metabolic health

Particularly relevant for PCOS-related fertility challenges. Resistance training and appropriately dosed aerobic exercise improve insulin sensitivity in ways that directly support ovulation and hormonal regulation.

3

Reducing inflammatory load

Chronic inflammation impairs implantation and embryo quality. A well-structured program at the right intensity reduces pro-inflammatory markers without the cortisol spike that high-intensity training produces.

4

Supporting mental health through the process

Fertility journeys are psychologically demanding. Exercise has a robust evidence base for reducing anxiety and depression — both of which are highly prevalent in people going through fertility treatment, and both of which affect outcomes.

5

Preparing the body for pregnancy

A body that is strong, metabolically healthy and physically prepared for the demands of pregnancy is a better environment for conception and a better foundation for a healthy pregnancy. We look ahead, not just at the current cycle.

WORKING WITH ME

What does a fertility support program look like?

Every program is built around where you are in your journey — your underlying condition if there is one, your cycle stage, whether you are in active treatment, and what your body needs right now versus what it will need next month.

INITIAL CONSULTATION
FULL CLINICAL ASSESSMENT

We review your reproductive history, any diagnoses, current treatment protocol if applicable, existing exercise habits, relevant bloodwork and your goals. We are thorough here because the prescription depends on the full picture.

WEEK 1-2
your personalised program

Your program accounts for where you are in your natural or treatment cycle — with different guidance for different phases so you always know what is appropriate right now.

Active treatment
ART-specific modifications

If you move into an IVF or IUI cycle, your program adjusts accordingly at each phase — stimulation, retrieval, transfer and the two-week wait each have specific exercise guidance.

ongoing
Responsive, not rigid

Fertility journeys change quickly. We stay responsive — adjusting when cycles change, when treatment protocols shift, or when your body needs something different. You have direct access to us when things change.

COMMON QUESTIONS

Frequently asked questions

Exercise cannot guarantee conception — and anyone who tells you otherwise is overstating the evidence. What exercise can do is meaningfully improve the hormonal environment, metabolic health and inflammatory load that fertility depends on. For women with conditions like PCOS, the evidence for exercise improving ovulation and conception rates is particularly strong.

Not necessarily stop — but probably modify. High-volume, high-intensity training can suppress the hormonal axis that drives ovulation, particularly if you are not eating enough to support your training load. We assess your full picture and give you specific guidance rather than a blanket answer.

Yes —but some modifications and considerations need to be made. It is important we discuss this in an individualised way because no body is the same and all programming for fertility (including during treatments) should be for each person.

Fertility clinics are excellent at the medical and reproductive side of treatment. Exercise prescription is a separate clinical discipline that most fertility specialists do not have the time or training to address in detail. The two complement each other — they are not competing.

Exercise Physiology is covered by most Australian private health funds under extras cover. If your fertility challenges are related to a chronic condition like PCOS, you may also be eligible for Medicare rebates through a GP chronic disease management plan.

Give your body the best possible environment for conception.

Telehealth consultations available nationally through Remote Control Exercise Physiology. No referral needed. We work alongside your fertility clinic, not instead of it.

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