Trying to conceive: no pose has been shown to helpStrong evidence
NICE tells people concerned about their fertility that "the effectiveness of complementary therapies for fertility problems has not been properly evaluated, and that further research is needed before such interventions can be recommended". We found no study testing a pose for conception, implantation, egg quality or blood flow to the womb or ovaries, and legs up the wall has been studied only for eye pressure.
Sources 3, 1, 2, 19
IVF: a mind and body programme didn't change resultsEmerging evidence
In the best trial, 168 distressed women were randomised to a 10-week Mind/Body Program for Infertility, which included hatha yoga and a fertility yoga session, or to a support group. Both groups felt better, the programme did better on only one measure of anxiety, and pregnancies and live births didn't differ over 30 months. Earlier trials that reported more pregnancies lost many participants or compared a later treatment cycle.
Sources 10, 20, 21
Stress and anxietyEmerging evidence
In 128 women at an IVF clinic, 6 weeks of twice-weekly yoga lowered fertility-related stress against a control group. Studies without a proper comparison group found falling anxiety and distress in women doing hatha yoga before or during IVF, and reviews of mind-body programmes found small to moderate falls in anxiety and low mood. A 2026 review found only 3 yoga studies (297 women) since 2014, and none measured pregnancy.
Sources 7, 22, 23, 8, 24, 9
Stress doesn't decide the resultStrong evidence
Distress before treatment wasn't linked with pregnancy across 14 studies of 3,583 women, and anxiety, low mood or stress before or during treatment weren't linked with the results across 20 studies of 4,308 women. The HFEA says there's no conclusive evidence that stress affects treatment outcomes.
Sources 4, 5, 6
Psychological support in generalMixed evidence
Across 58 trials of psychological support for people with infertility, pregnancy rates were modestly higher, but most trials were at high risk of bias. Another review found a small effect, and one that included weaker studies found a larger one. Yoga was only a small part of this evidence.
Sources 25, 26, 27
Lying still after inseminationMixed evidence
Lying still for 15 minutes after insemination raised ongoing pregnancies (27% against 18%) in one trial of 391 couples, but not in a repeat with 498 couples (32% against 40%), and a 2024 review concluded that its findings "do not support the use of bed rest after IUI". NICE says bed rest of more than 20 minutes after embryo transfer doesn't improve the outcome of IVF. We found no study of lying still, or legs up the wall, after sex.
Sources 28, 29, 30, 15, 19
PCOS (PMOS)Mixed evidence
In a controlled but not randomised study of 52 women with PCOS and infertility, 3 months of yoga improved weight, insulin and quality of life, and 13 against 7 women became pregnant within a year. We found no randomised trial of yoga and pregnancy in PCOS. The NHS says PMOS (polyendocrine metabolic ovarian syndrome), which used to be called PCOS, can affect fertility, and that treatments include medicines to help you ovulate.
Sources 31, 32, 33
Weight and activityStrong evidence
With a body mass index (BMI) of 30 or more, NICE says "participating in a group programme involving exercise and dietary advice leads to more pregnancies than weight loss advice alone". Yoga can be part of being active, and strong standing poses count as strength work.
Sources 3, 14
MenMixed evidence
Four studies from India reported better sperm counts, movement or DNA measures after 3 to 12 weeks of yoga, but none had an untreated comparison group, one lost almost half its participants, and none counted pregnancies. We found no randomised trial. Semen results vary from test to test, which is why the NHS usually repeats a test that finds a possible problem about 3 months later.
Sources 11, 12, 34, 35, 13, 36
Hot yogaMixed evidence
We found no study of hot yoga during fertility treatment or in the first weeks of pregnancy. ACOG (the American College of Obstetricians and Gynecologists) advises avoiding overheating in pregnancy, "especially in the first trimester", and avoiding hot yoga. NICE says a higher temperature around the testicles is linked with poorer semen quality, though it's uncertain whether loose underwear improves fertility.
Sources 37, 38, 3