Embarking on the journey of egg freezing or In Vitro Fertilization (IVF) is an emotionally charged and physically demanding milestone for many individuals and couples. As patients prepare for ovarian stimulation, egg retrieval, and embryo transfer, their daily routines are often turned upside down.
Among the most common questions medical professionals hear from patients is: "Can I keep working out?"
For everyday gym-goers, this uncertainty can be stressful, but for competitive athletes and dedicated fitness enthusiasts, the thought of hitting pause on training can feel devastating. A newly published survey sheds much-needed light on this topic, challenging long-held assumptions about physical activity during assisted reproductive technology (ART) treatments and offering reassurance to those who want to stay moving.
Main Facts: The Intersection of Fitness and Fertility
The landscape of fertility treatments has evolved dramatically over the last decade, with millions of people utilizing egg freezing and IVF to build families on their own terms. However, medical guidance regarding lifestyle factors—particularly high-intensity exercise—has historically erred heavily on the side of caution. Patients have frequently been advised to halt running, heavy weightlifting, and intense cardio out of fear that physical stress could compromise egg quality, reduce fertilization rates, or increase the risk of rare but serious complications like ovarian torsion.
The newly released study, published in the scientific journal Sports Medicine, investigates these clinical dogmas by examining the real-world experiences of individuals who maintained or modified their training regimens during fertility care.
The core finding is as refreshing as it is surprising for many patients: staying active during egg freezing or IVF was not linked to a higher frequency of medical complications. While a significant portion of participants chose to scale back their workout routines, the data suggests that an absolute, blanket ban on exercise may be unnecessary for many patients.
Chronology: How the Study Was Conducted
To understand how physical activity impacts fertility patients, a team of researchers designed a comprehensive international survey targeting individuals with active training backgrounds.
- Participant Pool: The study evaluated 216 recreational and elite athletes, with an average age of 36.5 years. To ensure accuracy and relevance, all participants had undergone either egg freezing or IVF within the five years prior to the study.
- Geographic Spread: The cohort was primarily drawn from North America and Europe, predominantly spanning the United States, Canada, and the United Kingdom.
- Data Collection Period: Between March and December 2025, participants completed detailed questionnaires about their physical habits. They reported their baseline exercise volumes before starting treatment compared to their activity levels during ovarian stimulation and retrieval cycles.
- Clinical Tracking: Participants detailed any health complications or adverse events experienced during their cycles, alongside noting whether their fertility specialists or medical care teams provided specific exercise restrictions or recommendations.
By bridging the gap between patient-reported outcomes and clinical experiences, the research team aimed to determine if maintaining an active lifestyle posed a genuine threat to treatment success and safety.
Supporting Data: What the Numbers Tell Us
The statistical findings of the survey offer a nuanced look at how athletes actually behave when faced with fertility treatments, challenging the notion that everyone stops exercising entirely.
1. Most People Kept Moving
Despite the physical toll of hormone injections and ovarian enlargement, 79% of surveyed athletes continued exercising in some capacity throughout their treatment cycles. Complete rest was the exception rather than the rule.
2. Complication Rates Remained Stable
Across the entire participant pool, researchers recorded a total of 38 adverse events. However, when the data was stratified—comparing athletes who maintained an active routine against those who ceased exercising completely—there was no statistically significant difference in the incidence of adverse events. Simply put, exercising during IVF or egg freezing did not increase the overall odds of experiencing complications in this group.
3. The Prevalence of Scaling Back
Even though most participants kept moving, very few maintained their pre-treatment intensity.
- Nearly 80% of active participants modified their workouts, reducing their training intensity, frequency, or duration, or pivoting to low-impact alternatives like walking, yoga, or swimming.
- Conversely, 31% of the total cohort stopped exercising entirely, primarily driven by precautionary medical advice or personal anxiety over protecting their investment in the costly and emotional process.
Official Responses and Medical Perspectives: Why Caution Prevails
If data shows that exercising does not inherently spike complication rates, why do so many fertility specialists advise patients to take it easy?
To understand this disconnect, one must look at the standard of care in reproductive endocrinology. Approximately three-quarters of the study’s participants received formal exercise guidance from a medical provider, and an overwhelming 78% strictly followed that advice.
Doctors generally recommend limiting high-impact exercise, heavy lifting, and twisting movements for several valid reasons:
- Ovarian Enlargement: During ovarian stimulation, follicles grow significantly, causing the ovaries to swell to several times their normal size.
- Ovarian Torsion: This anatomical enlargement dramatically increases the risk of ovarian torsion—a painful and dangerous medical emergency where the ovary twists on its vascular pedicle, cutting off blood supply. Vigorous, high-impact movements or sudden changes in direction can theoretically exacerbate this risk.
- Emotional Stakes: Fertility treatments are notoriously expensive, time-consuming, and emotionally draining. For many patients and doctors alike, the philosophy is one of absolute risk aversion: Why take any chance at all with something so precious?
Healthcare providers are tasked with safeguarding both the physical health of the patient and the success of the cycle. Therefore, even if population-level data suggests exercise can be safe, individual clinical discretion will always prioritize minimizing risk.
Implications for Patients: How to Approach Workouts During Treatment
What does this research mean for someone who just received an IVF protocol calendar or a prescription for hormone injections?
First and foremost, the study does not give a free pass to ignore medical advice or maintain a brutal, high-intensity CrossFit or marathon-training schedule while your ovaries are hyper-stimulated. Every body, diagnosis, and treatment plan is entirely unique.
Instead, the findings serve as an empowering reminder that fertility patients are not fragile glass, and complete bed rest is rarely required. Here is how patients can thoughtfully navigate exercise during treatment:
Open a Dialogue with Your Care Team
Do not assume you must instantly cancel your gym membership or quit running. Instead, have a transparent conversation with your reproductive endocrinologist or nurse practitioner. Ask specific questions: Based on my follicle count and hormone levels, what is my risk level for torsion? Are moderate-weight lifting and steady-state cardio safe for me this week?
Embrace Modification Over Elimination
If high-intensity interval training (HIIT) or heavy deadlifts are your norm, understand that treatment cycles are temporary. You may not need to stop lifting altogether, but you might need to drop your weights down by 50%, avoid deep twisting or jumping, and transition to lower-impact movements like incline walking, stationary cycling, or Pilates.
Listen to Your Body
Ovarian stimulation causes physical sensations that are impossible to ignore—bloating, cramping, and heaviness in the pelvis. If a movement feels uncomfortable, heavy, or wrong, give yourself permission to step back. Your primary goal during an IVF or egg freezing cycle is a successful retrieval, not hitting a personal best.
Acknowledge Study Limitations
It is important to remember that this study relied on self-reported survey data rather than a randomized, controlled clinical trial. Because every patient’s body responds differently to fertility medications, the research cannot prescribe a universal "safe zone" for exercise. Personalized medical guidance remains paramount.
The Takeaway
The modern narrative surrounding fertility treatment is slowly shifting from a culture of restriction and fear to one rooted in empowerment, informed choice, and body autonomy.
While egg freezing and IVF require profound physical and emotional adjustments, you do not automatically have to put your entire active lifestyle on ice the moment your cycle begins. By collaborating closely with your fertility care team, respecting your body’s physical limits during ovarian stimulation, and opting for smart modifications rather than total cessation, you can maintain your mental and physical well-being throughout your family-building journey.
