The BabySutra
Did You Know?

Fascinating Fertility Facts

Small wonders of the human body, worth knowing on your journey.

The largest cell

The egg is actually the largest cell in the human body — while sperm is one of the smallest. Size has nothing to do with strength.

Timing matters

An egg survives only 12-24 hours after release — but sperm can wait inside the body for days. In conception, timing really is everything.

Body temperature

Ever wondered why the testicles sit outside the body? Sperm production needs a temperature about 2-3°C lower than normal body heat.

Sperm lifespan

Sperm can live inside a woman's body for up to 5 days — pregnancy can happen even if intercourse occurred days before ovulation.

Healthiest wins

It's not the fastest sperm but the healthiest one that usually fertilises the egg.

A lifetime of eggs

A woman is born with all her eggs for life, while a man keeps producing new sperm every single day.

Lifestyle shapes the future

It takes about 2.5 months to make one batch of sperm — so today's lifestyle shapes fertility 2-3 months later.

Everyday heat

Frequent hot baths, saunas, or laptops resting on the lap can quietly lower sperm count over time.

Nature's filter

The female body naturally filters out weaker sperm before one ever reaches the egg.

Silent beginnings

Most fertilised eggs never become a pregnancy — many simply don't implant, and you'd never know.

The fertile window

The fertile window is just 5-6 days a month — miss it, and you wait for the next full cycle.

Not always day 14

Ovulation doesn't always fall on "day 14" — it depends on your unique body, not a fixed calendar.

Ovulation, gently explained

Body temperature rises after ovulation, not before — so it confirms fertility rather than predicting it.

Mittelschmerz

Ovulation pain has a name — Mittelschmerz — and it's completely normal for some women to feel it.

Thyroid whispers

Even mild thyroid imbalance can quietly delay or prevent ovulation.

Sleep & hormones

Sleep deprivation can lower testosterone in men and disturb ovulation in women.

Twenty percent

Even in healthy couples, the chance of pregnancy in any given month is only about 20%.

Cervical mucus

The cervix changes its mucus through the month — sometimes blocking sperm, sometimes helping them swim.

The regenerating uterus

The uterus is one of the fastest-regenerating tissues in the body, rebuilding its lining every single month.

Where it begins

Fertilisation actually happens in the fallopian tubes — not the uterus, as many assume.

The zinc factor

Zinc plays a key role in sperm production and healthy testosterone levels.

Folic acid for men

Folic acid isn't just for women — it also supports sperm health in men.

Sunshine matters

Vitamin D deficiency is surprisingly common, and is linked to reduced fertility in both men and women.

Myths vs. Facts

Let's Set the Record Straight

Some of the most common things people believe about fertility — and what's actually true.

Myth

Infertility is always a woman's problem.

Only women face fertility issues, or are "responsible" when conception doesn't happen.

Fact

Men contribute to nearly 40-50% of infertility cases.

Sperm count, motility, morphology, lifestyle, stress, sleep, smoking, and heat exposure all play a role.

Myth

Belly shape predicts the baby's gender.

A low belly means a boy, a high belly means a girl.

Fact

Belly shape comes down to body type and baby's position.

It depends on muscle tone, body frame, and pregnancy stage — not gender.

Myth

Stress alone causes infertility.

"Just relax and you'll conceive" — a phrase most couples have heard one too many times.

Fact

Stress can affect hormones, but it's rarely the sole cause.

Infertility is a medical condition shaped by multiple physical and lifestyle factors together.

Myth

Regular periods mean perfect fertility.

If cycles are regular, conception is guaranteed.

Fact

Regular cycles are a good sign, but not the whole story.

Egg quality, ovarian reserve, hormones, and tubal and uterine health all matter too.

Myth

Age affects only women's fertility.

Men can father children at any age, with no decline at all.

Fact

Male fertility changes with age too.

Sperm DNA quality, motility, and testosterone can all be affected over time.

Myth

One healthy child means future pregnancies will be easy.

If you conceived once, the second time will never be an issue.

Fact

Secondary infertility is real — for both partners.

Age, hormonal shifts, lifestyle, weight changes, or sperm health decline can all play a role.

Myth

Keeping legs raised after intercourse helps conception.

Gravity decides whether pregnancy happens.

Fact

Sperm reach the cervix within minutes.

Position alone doesn't determine or guarantee conception.

Myth

A woman cannot get pregnant during her period.

Periods are always a "safe" window with zero chance of conception.

Fact

Pregnancy is less likely, but still possible.

This is especially true for women with short cycles or early ovulation.

Myth

Eating for two during pregnancy is necessary.

Pregnant women should eat double the quantity.

Fact

Quality matters far more than quantity.

Balanced nutrition and healthy weight gain matter most — overeating can raise risks like gestational diabetes.

Myth

Heartburn means the baby will have lots of hair.

Severe acidity is said to predict a "hairy baby."

Fact

Heartburn comes from hormones and pressure on the stomach.

It has nothing to do with the baby's hair.

Myth

Exercise during pregnancy is unsafe.

Pregnant women should avoid all movement and exercise.

Fact

Doctor-approved movement is often beneficial.

It can improve circulation, mood, sleep, and stamina — some yoga postures may even help with delivery.

Myth

Cravings reveal the baby's gender.

Sweet cravings mean a girl, salty cravings mean a boy.

Fact

Cravings come from hormones and nutrition shifts.

They're influenced by the body's changing needs — not the baby's sex.

Myth

Baby gender depends on the mother.

Women are "responsible" for having a boy or a girl.

Fact

Biologically, sperm determines the baby's sex chromosome.

It is never determined or influenced by the mother alone.

Myth

Supplements alone can fix fertility.

Taking random fertility supplements guarantees conception.

Fact

Fertility is influenced by many factors together.

Sleep, nutrition, stress, hormones, sperm and egg health, weight, and timing all play a part.

Myth

C-section mothers are not "real mothers."

Only a vaginal delivery counts as "true" motherhood.

Fact

A mother is a mother, regardless of how the baby is born.

The method of delivery doesn't define or diminish motherhood.

Want to Learn More About Your Body?

This is just a glimpse. Book a consultation, and we'll help you understand exactly what's happening in your unique fertility journey.

Book a Consultation