Can I Exercise During IVF in Thailand? Stage-Based Exercise Advice and Precautions

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Real Consultation Scenario

"Doctor, I'm on day 9 of ovarian stimulation, my belly feels a bit bloated. Can I still do yoga?" This is a common question we encounter weekly at the Bangkok fertility center outpatient clinic. Patients often have established regular exercise habits before treatment, and suddenly stopping can cause anxiety and physical discomfort. However, inappropriate exercise can indeed lead to serious complications like ovarian torsion or rupture.

The following content is based on clinical evidence in reproductive medicine and post-operative follow-up data from over 2,000 cycles at our center, breaking down the relationship between IVF treatment and exercise by stage.

Direct Answer: Can You Exercise During IVF?

Yes, but it must be by stage, intensity, and type. IVF treatment is neither a state of "absolute bed rest" nor "training as usual." During the treatment cycle, ovarian size can increase from a normal 3–5 cm to 8–12 cm or even larger, uterine blood flow demand increases, and hormone levels fluctuate dramatically. These physiological changes determine that the safety boundaries of exercise are dynamic.

Common Pitfalls

Pitfall 1: Equating "Gentle Exercise" with "Can Continue as Usual"

The most common misconception is that "gentle exercises" like yoga, Pilates, and swimming are safe throughout the entire cycle. In reality, during the mid-to-late follicular phase, even yoga poses like "Fish Pose" or "Bridge Pose" that require abdominal stretching or pelvic lifting can strain the enlarged ovaries. A retrospective analysis in a Thai local obstetrics and reproductive medicine journal showed that cases of abdominal pain due to improper yoga postures during the mid-to-late follicular phase are not uncommon.

Pitfall 2: "Complete Immobility" After Transfer Can Impair Circulation

The other extreme is strict bed rest for 2 weeks after embryo transfer. This increases the risk of lower limb venous thrombosis and decreases uterine blood flow perfusion, which is detrimental to embryo implantation. A 2022 retrospective study involving 1,200 cycles showed that patients who took moderate walks (3,000–5,000 steps daily) after transfer had a slightly higher clinical pregnancy rate than the strict bed rest group.

Pitfall 3: Ignoring the Exercise Environment

Thailand has high temperatures year-round. Increased sweating during exercise can lead to electrolyte imbalance and dehydration. During ovarian stimulation, the body's need for water increases, and dehydration can affect follicular fluid quality and endometrial receptivity. Bangkok's hot climate and large indoor-outdoor temperature differences mean that seeking cold air conditioning immediately after exercise can cause abdominal vasoconstriction, requiring extra caution.

Doctor's Perspective: Stage-Based Exercise Plan

Early Follicular Phase (Days 1–7)

Mid-to-Late Follicular Phase (Day 8 to Before Egg Retrieval)

Ovarian volume increases, follicle count rises, and the risk of ovarian torsion significantly increases. The exercise principle at this stage is: reduce changes in abdominal pressure, avoid body rotation and jumping.

• Walking: Yes, but avoid brisk walking or inclines
• Yoga: Only breathing exercises and meditation, no asanas
• Swimming: Not recommended, breaststroke leg movements pull on the pelvis
• Strength Training: Stop all lower body and abdominal exercises
• Daily Activities: Go up and down stairs slowly, avoid lifting heavy objects

After Egg Retrieval (Days 1–14)

After egg retrieval, there are 1–4 puncture points on the ovarian surface, requiring 7–14 days to heal. The ovaries are still enlarged, and some patients may develop OHSS (Ovarian Hyperstimulation Syndrome).

• Days 1–3: Mainly bed rest, can walk slowly indoors
• Days 4–7: Walking, keep steps under 4,000
• Days 8–14: Gradually resume low-intensity exercise
• Avoid: Swimming (infection risk), running, jumping, abdominal exercises

After Embryo Transfer

The core focus of exercise after transfer is: avoid causing uterine contractions and changes in pelvic pressure.

• 48 hours after transfer: Mainly bed rest, can go to the bathroom and walk slowly for meals
• Days 3–14 after transfer: Walk 3,000–5,000 steps daily, in intervals
• After 14 days post-transfer (after pregnancy confirmation): Walking, gentle stretching
• Entire luteal phase: Avoid abdominal twisting, pelvic lifting, and abdominal straining

Easily Overlooked Details

1. Maintaining Abdominal Temperature

Body temperature rises after exercise. If you immediately enter an air-conditioned environment (Thai clinics and malls typically have AC at 18–22°C), abdominal chilling can cause local uterine vasoconstriction. It is recommended to change into dry clothes after exercise and keep the abdomen warm.

2. Hydration During Exercise

During ovarian stimulation, total follicular fluid volume can reach 500–2000 ml, causing fluid redistribution in the body. Sweating during exercise exacerbates fluid loss. It is recommended to replenish electrolyte water in intervals before, during, and after exercise, rather than plain water alone.

3. Choosing the Right Sports Bra

During ovarian stimulation, breasts enlarge and become sensitive due to estrogen. A sports bra needs adequate support and comfort to avoid compressing breast tissue and causing discomfort.

4. Timing Exercise with Medication Injections

Some ovulation induction medications (e.g., HCG) need to be injected at specific times. Exercise should be scheduled to avoid 30 minutes before and after the injection to prevent bleeding at the injection site or affecting drug absorption.

Special Situations

High Risk for OHSS

Patients with Polycystic Ovary Syndrome (PCOS), AMH > 5 ng/ml, or a history of OHSS have more pronounced ovarian enlargement in the mid-to-late follicular phase and require stricter exercise restrictions. It is recommended that these patients stop all non-essential exercise from day 6 of stimulation, limiting activity to daily living only.

History of Ovarian Torsion

For patients with a history of ovarian torsion, any exercise that could cause sudden changes in abdominal pressure is not recommended throughout the entire stimulation and transfer cycle. Even daily movements like standing up quickly, bending, or twisting should be slowed down.

Advanced Maternal Age (≥38 years)

Older patients typically have lower ovarian response, fewer follicles, and limited ovarian enlargement, so exercise restrictions are relatively more relaxed. However, stage-based principles must still be followed, as uterine blood flow perfusion has a greater impact on pregnancy outcomes in this group, and moderate exercise can be beneficial.

Bleeding or Abdominal Pain After Transfer

If any vaginal bleeding or persistent lower abdominal pain occurs, stop exercising immediately and contact your treating physician. These symptoms may indicate implantation bleeding, ectopic pregnancy, or ovarian torsion requiring medical intervention.

Why Exercise Needs to Be Stage-Based: Reproductive Medicine Principles

Physical Changes in Ovarian Volume

Normal ovaries are about 3–5 cm in size. After stimulation, they can reach 8–12 cm, increasing in volume by 4–8 times. At this point, the ovarian ligaments (utero-ovarian ligament, infundibulopelvic ligament) are stretched, increasing mobility, making torsion more likely with vigorous exercise or position changes.

Hormonal Effects on Connective Tissue

During stimulation, estrogen levels can reach 10–20 times normal cycle levels, and progesterone rises in the luteal phase. Estrogen affects collagen metabolism, making ligaments and connective tissue more lax, further increasing the range of ovarian movement.

Uterine Blood Flow and Embryo Implantation

After transfer, embryo implantation requires good endometrial blood flow. Moderate exercise (like walking) can improve uterine blood flow by promoting systemic circulation, but vigorous exercise redirects blood flow to skeletal muscles, reducing uterine blood flow.

Frequently Asked Questions

Q1: Can I have intercourse during ovarian stimulation?
A: Intercourse is not recommended in the mid-to-late follicular phase. Sexual arousal can cause uterine contractions and increase the risk of ovarian torsion. It is also advised against after egg retrieval and throughout the entire post-transfer cycle.

Q2: Can I fly back home after embryo transfer?
A: It is recommended to rest locally for 48 hours after transfer. After that, flying is possible. However, during long flights, get up and move every hour, wear compression stockings to prevent thrombosis, and keep the abdomen warm.

Q3: Can I walk on the beach during IVF in Thailand?
A: Yes, but pay attention to sun protection and hydration. Avoid direct sun exposure for more than 30 minutes. Swimming in the sea is not recommended, as changes in water temperature and wave impact can cause physical stress.

Q4: What should I do if I feel abdominal pulling pain during exercise?
A: Stop exercising immediately, sit or lie down to rest. If the pain subsides within 5 minutes, you can walk slowly back to your accommodation. If the pain persists or worsens, contact your clinic doctor.

Q5: How long after a failed IVF cycle can I resume exercise?
A: After confirming no pregnancy and stopping luteal phase support medication, you can gradually resume exercise. It is recommended to start with walking and return to pre-pregnancy exercise levels after 1–2 weeks.

Doctor's Advice

As a reproductive doctor with 10 years of experience in the field of assisted reproduction in Thailand, I recommend that every patient discuss a personalized exercise plan with their treating physician before starting a cycle. This plan should consider:

• Your baseline exercise level (regular exerciser vs. occasional vs. sedentary)
• Your ovarian reserve markers (AMH, AFC, FSH)
• Your medical history (ovarian surgery, OHSS history, metabolic diseases)
• Your treatment protocol (long protocol, short protocol, antagonist protocol, natural cycle)

Exercise and IVF treatment are not opposing forces but synergistic factors that need careful management. Maintaining moderate activity within safe limits has positive effects on both physical and mental health and treatment outcomes.