The two seconds that decide where the pressure goes
Breathing out on the hard part of a lift is the smallest habit in postpartum recovery, and the one that protects the most.
Quick answer
Breathe out through the hardest part of any lift, and start the exhale a fraction before you move rather than during it. The exhale lets your diaphragm rise, your pelvic floor lift and your deep abdominals draw in together, which shares the pressure instead of pushing it down onto the pelvic floor or out through the midline. Holding your breath and bearing down does the opposite. This one habit, practised on small movements first, is what makes heavier lifting safe again after birth.
Why the breath matters more than the weight
Picture your torso as a soft container. The diaphragm is the lid, the pelvic floor is the base, the deep abdominals and the muscles alongside your spine form the walls. When you lift something, pressure inside that container rises. It has to. The question is never whether pressure rises, only where it goes.
In a container that is working well, all four surfaces respond together and the pressure is shared. In a container that has just been through pregnancy, the walls have been stretched, the base has taken months of load, and the automatic timing between them is often out. Pressure then finds the path of least resistance, which is usually downward through the pelvic floor or forward through the midline. That is the same principle we cover in more depth in what intra-abdominal pressure means postpartum.
Breath is the lever you actually have conscious control over. You cannot consciously fire your transverse abdominis on command with any reliability, but you can absolutely control when you breathe out, and the exhale brings the rest along with it.
of women had diastasis recti at six weeks postpartum (Sperstad et al., British Journal of Sports Medicine, 2016), which is why pressure management is a near-universal skill rather than a niche one
still had it at six months in the same cohort, the window in which most mums are returning to lifting
is when the NHS schedules the postnatal check, a sensible point to discuss returning to loaded exercise
Step 1: Find your natural exhale
Lie on your back with your knees bent and feet flat, or sit upright if lying down is uncomfortable. Put one hand on your lower ribs and one on your belly. Breathe in through your nose without trying to do anything clever, then let the breath out through slightly pursed lips as though you were fogging a mirror slowly.
You are looking for one thing: the exhale should feel unhurried and should empty from the bottom up. Most of us, especially when tired, breathe shallowly into the upper chest. Spend a few minutes here before you add anything else. If this is entirely new territory, start with deep core breathing, which is the foundation this whole technique sits on.
Step 2: Learn the 360-degree breath
Now add direction. On the inhale, aim to feel your lower ribs widen sideways and slightly backwards into your hands, not just your belly rising forward. On the exhale, feel the ribs soften back down without you forcing them.
The reason this matters is that a ribcage stuck in an open, flared position leaves the deep abdominals slack and the diaphragm poorly aligned over the pelvic floor. Getting the ribs to move properly is what allows the container to close. Give this two or three sessions of a few minutes each before moving on, and read up on what the transverse abdominis actually does if you want to understand the muscle you are recruiting.
Step 3: Add the exhale to a small movement
Stay on your back with knees bent. Breathe in and let everything soften. Then begin breathing out, and a moment after the exhale has started, slowly slide one heel away along the floor until the leg is nearly straight. Breathe in as you draw it back.
Two details make or break this step. The first is the timing: the breath starts before the movement, not with it. The second is the effort level, which should feel like about a two out of ten. You are rehearsing a pattern, not training a muscle. If your belly domes into a ridge as the heel slides out, the leg has gone too far. Shorten the range. Our guide to coning and doming shows you what to look for.
Step 4: Take it into a lift
Once the pattern is automatic lying down, take it standing. The rule is the same in every lift: exhale through the hardest part of the movement.
- Squat or sit-to-stand: breathe in as you lower, breathe out as you stand up.
- Picking up the baby or a car seat: breathe in as you hinge down, breathe out as you lift.
- Overhead press or putting a bag in a high cupboard: breathe out as the weight travels up.
- Rows and pulls: breathe out as you pull towards you.
- Carries, where there is no obvious hard part: breathe steadily and never hold. If you cannot talk while carrying, it is too heavy for now.
Real life will not always cooperate, and that is fine. Nobody manages perfect breath timing while wrestling a toddler into a car seat at the end of a long day. The aim is that the pattern becomes your default for deliberate lifting, which is enough.
Step 5: Watch for the warning signs
These are feedback, not failure. Each one has the same fix: reduce the load or the range, and rebuild.
- A ridge, dome or bulge down the middle of your belly during effort.
- Any leaking of urine, even a few drops.
- A heavy or dragging sensation in the pelvis during or after the session.
- Breath-holding, or your face going red with the effort of a rep.
- Straining downwards, which is the exact opposite of what you want and is worth reading about alongside why kegels alone are not enough.
The short version
Exhale on effort, start the breath just before the movement, keep the ribs mobile, and never bear down. Practise it lying down until it is boring, then take it into your lifts. It costs nothing, it takes about five minutes a day, and it is the single habit that lets load become safe again.
Once this pattern is second nature, the natural next question is how much load you can add and when. That is a bigger decision about sequencing your whole return, and we have laid it out in postpartum core program vs strength training, and which should come first.
Want the whole first phase mapped out?
The Core Reconnect Program takes this breathing work and builds it into a structured, progressive routine you can do in ten to fifteen minutes while the baby naps. One payment, no subscription, yours to keep, which makes it the budget-friendly alternative to ongoing memberships. Use code GLOW20 for 20% off. Results vary from mum to mum.
Frequently asked questions
Should I breathe in or out when I lift something heavy?
Breathe out. The exhale allows the diaphragm, pelvic floor and deep abdominals to work together and share the rise in pressure. Start the exhale a fraction before the effort begins rather than partway through it.
Is it ever safe to hold my breath while lifting?
Breath-holding under load, sometimes called the Valsalva manoeuvre, is used deliberately by some experienced lifters for maximal attempts. It sharply increases downward pressure on the pelvic floor, so it is not appropriate in early postpartum recovery or for anyone with leaking, heaviness or an unresolved separation. If you find you cannot complete a rep without holding your breath, the weight is telling you something.
How long before this feels automatic?
Most mums find the pattern feels natural within two to three weeks of short daily practice, though it varies a great deal. Fatigue undoes it quickly, so expect to lose it on bad nights and simply pick it up again. It is a habit, not a milestone you pass once.
Do I need to pull my belly button to my spine as well?
No, and aggressively sucking in is usually counterproductive because it can drive pressure downwards. A gentle, quiet drawing-in happens on its own when the exhale is done well. If you are gripping hard enough to notice it, you are doing too much.
Can I use this while carrying my baby all day?
Use it for deliberate lifts, such as picking the baby up out of the cot, in and out of the car seat, or lifting the pram. Trying to time every breath across an entire day is neither realistic nor necessary. Consistent posture, varying which hip you carry on, and taking the load off where you can matter more across the day.
Sources: Sperstad JB et al., "Diastasis recti abdominis during pregnancy and 12 months after childbirth", British Journal of Sports Medicine, 2016; American College of Obstetricians and Gynecologists, Physical Activity and Exercise During Pregnancy and the Postpartum Period; NHS, Your postnatal check and Pelvic floor exercises; Royal Australian and New Zealand College of Obstetricians and Gynaecologists, Exercise during pregnancy and the postpartum period; Cleveland Clinic, Pelvic Floor Muscles and Diastasis Recti.
This article is general education, not medical advice, and Mumma Glow is not affiliated with any program or app mentioned. Results vary from mum to mum. See your GP, midwife or a women's health physiotherapist before returning to loaded exercise, and particularly if you have pain, leaking, a feeling of heaviness in the pelvis, or a separation that is not improving.