---
title: "Birth Hacks: Evidence-Based Labour Preparation Tips from 36 Weeks Gestation"
id: "4388"
type: "post"
slug: "birth-hacks-evidence-based-labour-preparation-tips-from-36-weeks-gestation"
published_at: "2025-01-28T08:13:08+00:00"
modified_at: "2026-08-14T11:07:06+00:00"
url: "https://www.allforone.com.au/birth-hacks-evidence-based-labour-preparation-tips-from-36-weeks-gestation/"
markdown_url: "https://www.allforone.com.au/birth-hacks-evidence-based-labour-preparation-tips-from-36-weeks-gestation.md"
excerpt: "Women’s Health Physiotherapy · Education Somewhere around 36 weeks the advice starts arriving from everywhere at once: drink this tea, rub that oil, do these stretches. Some of it has good research behind it. Some of it is tradition wearing..."
taxonomy_category:
  - "Women's Health Physiotherapy"
---

Women’s Health Physiotherapy · EducationSomewhere around 36 weeks the advice starts arriving from everywhere at once: drink this tea, rub that oil, do these stretches. Some of it has good research behind it. Some of it is tradition wearing a lab coat. This page goes through the eight things women most often ask us about before birth, tells you honestly how strong the evidence is for each one, and shows you how to do the ones worth doing.

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[Book an appointment](https://www.allforone.com.au/book-appointment/)
  
[Call us](https://www.allforone.com.au/contact-us/)
  
A full hour with a women’s health physio. None of this replaces your midwife or obstetrician, and we’ll say so whenever it matters. If you are 36 weeks and think you might be in labour, this page is not the place to sort that out. Call your hospital or midwife, day or night.

01## When should you start preparing for labour?

Thirty-six weeks is the number everyone quotes, and it is a reasonable anchor, but the honest answer is that different parts of this start at different times. Here is roughly how it lines up.

**From 34 to 35 weeks.** This is when perineal massage begins in most of the research, and it is the one item on this page with a real head start advantage, because the tissue change it produces takes weeks rather than days. Hip mobility work, breathing practice and getting your birth partner comfortable with counterpressure can all start here too, or earlier. None of them carry a timing risk.

**From 36 to 37 weeks.** Raspberry leaf tea is traditionally started around 36 weeks, and it is worth clearing with your midwife or obstetrician before you do. Clary sage waits until 37 weeks at the earliest, which is when a pregnancy is considered term, and again only with your midwife knowing.

**Whenever labour actually arrives.** Two of the best supported items on this page are not preparation at all. Continuous support in labour and warm compresses on the perineum during pushing happen on the day, so they go in your birth preferences rather than your calendar.

**And if you are reading this at 38 or 39 weeks.** You have not missed the boat. Perineal massage started late is still likely to be worth doing, breathing can be learned in an afternoon, and the two things with the strongest evidence behind them are both decisions you make when labour starts. Starting late beats not starting.

One thing that applies at every week: none of this replaces your maternity care. It sits alongside your midwife or obstetrician, and anything on this page that could plausibly affect your uterus gets checked with them first.

02## Antenatal perineal massage

If you only do one thing on this list, do this one. Antenatal perineal massage is the technique with the strongest evidence behind it, and it is the only item here we are comfortable stating with any confidence.

**What the evidence actually shows.** A Cochrane review pooling four randomised trials and around 2,500 women found that women who massaged the perineum in the last weeks of pregnancy were less likely to need stitches and less likely to have an episiotomy, and that the benefit was clear in women who had not given birth vaginally before. The effect is real but modest. Compared with the women who did not massage, the need for suturing fell by around nine per cent and episiotomies by around sixteen per cent, and rates of first, second, third and fourth degree tears themselves did not differ. Women who had given birth before reported less ongoing perineal pain three months on. You will see far bigger numbers than that quoted online, sometimes seventy per cent. The trial data does not support them, and we would rather you knew the real figure and did it anyway.

### How to do perineal massage

**When.** From about 34 to 35 weeks until birth.

**How often.** Two to four times a week is plenty. Daily has not been shown to work better.

**How long.** About five minutes each time.

**Technique.** Clean hands and short nails, and a lubricant or a natural oil such as sweet almond or vitamin E. Insert your thumbs a couple of centimetres, apply gentle steady pressure downwards and outwards in a U-shaped sweep, and hold at the point of stretching rather than pain. A warm shower or bath first makes the tissue more willing. Your partner can do it if reaching is getting difficult, which by 36 weeks it usually is.

**When not to.** Skip it if you have thrush or any vaginal infection, active genital herpes, unexplained bleeding, or if you have been told to avoid vaginal penetration for any reason such as placenta praevia. If you are not sure whether that includes you, ask your midwife.

If the technique feels vague when you read it, that is normal. Being shown once by a [women’s health physiotherapist](https://www.allforone.com.au/treatment/womens-health-physiotherapy/)
 is the difference between doing it and meaning to do it.

03## Raspberry leaf tea

Raspberry leaf tea is the most popular item on this list and the one with the weakest case behind it. We are not going to pretend otherwise.

**What the evidence actually shows.** The theory is that compounds in raspberry leaf tone the uterine muscle, and laboratory work does show effects on smooth muscle including uterine tissue. That has not translated into proven benefit for labour. The commonly cited support comes from one small retrospective study and one small randomised trial, both suggesting a possible modest shortening of the second stage, and neither replicated at scale. A systematic review looking across the whole literature concluded there is not enough evidence to recommend it, and a more recent review found no clear effect on the labour process at all. So the position we take is this: the evidence is limited and inconsistent, and any benefit is unproven.

**What that means for you.** If you enjoy it, drinking it is a pleasant ritual in the last few weeks and most women tolerate it without trouble. Treat it as a cup of tea rather than a treatment, and do not feel you have failed to prepare if you skip it entirely.

**Check first, and this one matters.** Talk to your midwife or obstetrician before you start, particularly if you have a history of preterm labour, a previous caesarean, any bleeding in this pregnancy, high blood pressure, or you are on medication or heading for an induction. Stop and call your midwife if you get regular tightening, cramping or anything that feels like contractions. If your midwife is happy for you to drink it, start with one cup a day around 36 weeks and build to two or three as tolerated.

04## Clary sage essential oil

Clary sage turns up in a lot of birth suites, usually for relaxation and for massage during labour rather than to start anything. It is widely used and thinly evidenced, and it comes with a firm timing rule.

**What the evidence actually shows.** The research on aromatherapy in labour is small scale and mixed, and mostly looks at anxiety and comfort rather than at labour progressing. There is no good evidence that clary sage brings on labour. It is thought to have a stimulating effect on the uterus, which is exactly why it is not used before term, and that caution is based on plausibility rather than on strong data either way.

### How do you use clary sage oil for labour?

Not before 37 weeks, and not without your midwife knowing. Once you are term, a few drops in a diffuser in the room is the usual way, or a few drops blended into a carrier oil for a gentle lower back, shoulder or foot massage during labour. Never apply it undiluted to skin and never take essential oils by mouth. If you are planning to bring it to hospital, mention it at an antenatal appointment first, because some units have their own policy on aromatherapy and some women are told to avoid it for reasons specific to their pregnancy.

05## L5/S1 and sacral massage

The junction between your lowest lumbar vertebra and your sacrum, L5/S1, sits right where a lot of women feel labour most fiercely. Back pain in labour is common, and firm pressure over the sacrum is one of the oldest and most reliably useful comfort measures there is.

**Massage.** Gentle circular pressure with a massage ball or the heel of a hand over the low back and sacrum, before labour, to ease the tension that builds up in the last weeks.

**Partner counterpressure.** This is the version that earns its place on the day. During a contraction your birth partner presses firmly and steadily into the sacrum with the heel of their hand while you lean forward onto something. Practise it now so they know how hard is hard enough, because most partners start far too gently.

**Being straight with you.** This is a comfort technique. It helps with pain and with coping, and that is a genuinely valuable thing in a long labour. It does not turn babies, and there is no good evidence it changes how the baby is positioned. Some acupressure points in this area are traditionally said to encourage contractions, which is not well supported, but if you plan to use strong sustained pressure or acupressure before 37 weeks, mention it to your midwife first.

06## Hip rotation stretches

Your baby has to negotiate a pelvis, and a pelvis that moves comfortably gives you more positions to labour in. That is the sensible version of the claim. Hip mobility work will not change the shape of your bones, but it does make squatting, kneeling, side lying and hands and knees more available to you when you need them.

**Butterfly stretch.** Sit on the floor with the soles of your feet together and your knees dropped out to the sides. Lean gently forward until you feel a stretch through the inner thighs and hips, and breathe there.

**Side lying internal rotation stretch.** Lie on your side with your knees together, and lift your top foot up onto something higher than your knees, a Pilates ball, a chair or a stool. Take some big breaths and let your knees stay together while the foot relaxes into the support.

**How often.** Daily, for about five to ten minutes, at whatever range feels like a stretch rather than a strain.

Two cautions. Your ligaments are already lax at this stage, so more range is not automatically better, and stretching into pain is not the goal. And if you have [pelvic girdle pain](https://www.allforone.com.au/understanding-pelvic-girdle-pain-during-and-after-pregnancy/)
, pubic bone pain or pain rolling over in bed, wide leg positions can stir it up rather than settle it, so get the stretches chosen for you rather than off a list. Position counts too: if a stretch has you flat on your back for more than a few minutes this late on, prop yourself up or roll onto your side instead, which is the short version of the advice on [lying on your back during pregnancy](https://www.allforone.com.au/supine-lying-on-your-back-during-pregnancy/)
.

Physio-taught [Prenatal Pilates](https://www.allforone.com.au/classes/prenatal-exercise/)
 is where most of our women do this work, adjusted week by week as the pregnancy goes on.

07## Bearing-down breathing

Knowing how to direct your breath in labour helps you stay calmer, spend less energy fighting the contraction, and push effectively when it is time to push. It is free, it carries no risk, and it is the technique most women say afterwards they wish they had practised more.

**How to practise it.** Breathe in slowly through your nose and let your belly expand rather than your chest. As you breathe out, gently direct effort down and forward into the pelvic floor, as though you were blowing out through a straw. The feeling you are after is downward and outward, not clenched. Practise alongside your pelvic floor exercises so you learn the difference between lifting and letting go.

**The half nobody mentions.** Being able to release the pelvic floor matters as much as being able to bear down. Plenty of women are very good at squeezing and have never been taught the other direction, and a pelvic floor that will not let go makes the second stage harder work than it needs to be.

**Why it is worth being checked.** A meaningful number of women bear up when they think they are bearing down, and you cannot tell from the outside. A women’s health physiotherapist can confirm what is actually happening, with real-time ultrasound where it helps, and show you how to change it. For most women that work starts in the first [pregnancy physiotherapy appointment](https://www.allforone.com.au/treatment/pregnancy-physiotherapy/)
. That is a much better use of an hour than guessing at home for six weeks.

08## Continuous labour support

Here is the quiet surprise of this whole page. The single best evidenced thing you can arrange for your labour is not a technique, a tea or an oil. It is having someone with you the entire time.

**What the evidence actually shows.** A Cochrane review of 27 trials and around 15,000 women found that women who had continuous support during labour were more likely to have a spontaneous vaginal birth, had shorter labours, were less likely to use pain medication, were less likely to have a caesarean or an instrumental birth, and were less likely to report negative feelings about their birth afterwards. Their babies were less likely to have a low five-minute Apgar score. No harms were found. That is a stronger body of evidence than anything else on this list by a comfortable margin.

**How to set it up.** Choose a partner, family member or doula you genuinely trust and who can stay the distance, including overnight. Make sure they know your birth preferences well enough to speak to them when you are busy. Have them practise counterpressure on your sacrum now rather than reading about it at 3am. And pack the things that help them help you: heat packs, affirmation cards, a massage ball, snacks, a phone charger.

09## Warm compresses during labour

This one is not something you do in advance. It is something you ask for on the day, and it is worth writing into your birth preferences so nobody has to remember in the moment.

**What the evidence actually shows.** A Cochrane review of perineal techniques in the second stage found moderate quality evidence that warm compresses applied to the perineum during pushing may reduce third and fourth degree tears. Later reviews also point to less short-term perineal pain in the first days afterwards. It is a simple, low risk measure with a reasonable evidence base, which is a rare combination.

**How it works in practice.** A clean cloth is soaked in warm water and held against the perineum while you push, usually by your midwife, sometimes by your support person under their direction. Write it into your birth plan, and mention it to your midwife when you arrive, because it takes ten seconds to organise if someone has thought of it beforehand.

10## Will any of this bring labour on early?

No, and that is not what any of it is for. Labour preparation and labour induction are two different projects, and everything on this page belongs to the first one.

**The ones with no plausible mechanism at all.** Perineal massage, hip stretches, breathing practice, sacral massage, continuous support and warm compresses do not start labour. Perineal massage changes tissue elasticity. Breathing changes what you do with a contraction once it arrives. Neither has anything to do with when your body decides to begin.

**The two that need a rule.** Raspberry leaf and clary sage are the only items here with any plausible uterine-stimulating effect, and it is worth saying that the evidence they trigger labour is weak in both cases. That is precisely why they carry timing rules and a check-with-your-midwife line rather than a shrug: not because they are dangerous, but because there is no good reason to take an unproven risk with an unproven benefit before term.

**Now the part that matters more.** Thirty-six weeks is late preterm, not term. A pregnancy is considered term from 37 weeks. If you are 36 weeks and you think you might be in labour, that is not something to sort out with a technique from an article. Call your hospital or midwife straight away, day or night, if you have regular tightening or contractions, period-like cramping that keeps coming, low back or pelvic pressure arriving in waves, any fluid leaking, any bleeding, severe or constant tummy pain, a fever, or if your baby’s movements have changed or slowed. Reduced movements are always worth a phone call, at any stage, and you will never be told you wasted anyone’s time.

Preparation is not induction. It is being ready for the day, not summoning it.

11## Why labour preparation matters, and where a physio fits.

Most of what is on this page you can do at home for nothing. The reason women book a birth preparation appointment anyway is that reading a technique and doing it correctly are not the same thing, and the last thing you want at 39 weeks is to discover you have been practising the wrong version for a month.

A birth preparation appointment with one of our [women’s health physiotherapists](https://www.allforone.com.au/treatment/womens-health-physiotherapy/)
 is a full hour, usually from around 34 weeks. It covers an assessment of your pelvic floor, being shown perineal massage properly, checking that your bearing down is going in the right direction and that you can also release, positions for labour matched to your body and your hips, and teaching your birth partner where and how hard to press. If you have pelvic girdle pain or you have been struggling to move comfortably, that gets treated in the same appointment.

From there, [Prenatal Pilates](https://www.allforone.com.au/classes/prenatal-exercise/)
 is where the strength and mobility side lives, taught by the same physiotherapists and adjusted around your pregnancy each week, whether you arrive at 36 weeks or start much earlier with [safe first trimester exercises](https://www.allforone.com.au/safe-first-trimester-exercises/)
.

And afterwards, your [6 week postnatal check](https://www.allforone.com.au/treatment/6-week-postnatal-check/)
 makes sure your recovery gets assessed rather than assumed, which is the other half of a job well done.

Once you have been through that check, [Mums and Bubs classes](https://www.allforone.com.au/classes/mums-and-bubs/)
 are where most women pick the exercise back up, with the baby in the room rather than in someone else’s care.

[Book an appointment](https://www.allforone.com.au/book-appointment/)

12## Your women’s health physios

Every women’s health physiotherapist at All for One has postgraduate training in pelvic health. Birth preparation, pelvic floor assessment and postnatal recovery are their every day, and nothing you want to ask will be new to them.

FAQ## Questions we hear a lot.

### When should I start perineal massage?

 From about 34 to 35 weeks of pregnancy, which is when it begins in most of the research. Two to four times a week for around five minutes each time is enough, and doing it daily has not been shown to work better. Starting later still appears worth doing, so if you are already at 38 weeks, begin now rather than deciding you have missed it. Avoid it if you have a vaginal infection, active genital herpes, unexplained bleeding, or you have been advised to avoid vaginal penetration.

### Does raspberry leaf tea work?

 The honest answer is that nobody knows, and the evidence is limited and inconsistent. Laboratory studies show effects on uterine smooth muscle, but that has not translated into proven benefits for labour. Two small studies suggested a possible modest shortening of the second stage and neither has been replicated at scale, while a systematic review concluded there is not enough evidence to recommend it. Enjoy it as a cup of tea if you like it, check with your midwife or obstetrician first, and do not count on it doing anything.

### Can labour preparation bring on labour early?

 Preparation techniques are not intended to induce labour and are not used for that. Perineal massage, hip stretches, breathing practice, sacral massage, continuous support and warm compresses have no mechanism for starting labour. Raspberry leaf and clary sage are the only two with any plausible uterine-stimulating effect, and the evidence that they trigger labour is weak, which is why both carry a timing rule and should be cleared with your midwife or obstetrician first.

### I am 36 weeks and think I might be in labour. What should I do?

 Call your hospital or midwife straight away, at any hour. Thirty-six weeks is late preterm rather than term, so regular contractions or tightening, cramping that keeps coming, pelvic pressure in waves, any fluid leaking, any bleeding, severe or constant tummy pain or a fever all need to be assessed rather than managed at home. Changed or reduced baby movements are always worth a phone call too, at any stage of pregnancy.

### Is it safe to use clary sage oil before 37 weeks?

 No. Clary sage is thought to have a stimulating effect on the uterus, so it is not used before 37 weeks, and it should not be used at any stage without your midwife knowing. There is no good evidence it brings labour on, and the research on aromatherapy in labour is small and mixed, mostly looking at comfort and anxiety. Once you are term, a few drops in a diffuser or blended into a carrier oil for massage is the usual way it is used.

### How should I prepare for labour at 37 weeks?

 At 37 weeks you are term, so everything on this page is available to you. Prioritise the two with the best evidence: arrange continuous support for your labour, and write warm compresses during pushing into your birth preferences. Start or continue perineal massage two to four times a week, practise bearing-down breathing and releasing your pelvic floor, and keep your hips moving comfortably. Anything with a possible effect on the uterus gets cleared with your midwife or obstetrician first.

### Do warm compresses really reduce tearing?

 A Cochrane review of perineal techniques in the second stage found moderate quality evidence that warm compresses applied during pushing may reduce third and fourth degree tears, and later reviews also report less perineal pain in the first days afterwards. It is a simple, low risk measure your midwife applies on the day. Put it in your birth plan and mention it when you arrive so it is ready when you need it.

## One hour now, for the day you have been thinking about for months.

Book a birth preparation appointment with a women’s health physiotherapist, or call and tell us how far along you are and what you would like to work on. Any studio, no referral needed.

[Book an appointment](https://www.allforone.com.au/book-appointment/)
  
[Call us](https://www.allforone.com.au/contact-us/)
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