Returning to exercise after birth: a safe, gradual postnatal guide

Postnatal · Updated July 2026 · All articles

Moving your body after having a baby can feel complicated. You might be eager to feel like yourself again, or you might be exhausted and wondering if you will ever feel ready. Both are completely valid. What matters most is that when you do return to exercise, you do it in a way that supports your body's recovery rather than working against it.

This guide walks through what pregnancy and birth actually do to your body, why the standard "6-week clearance" is not the green light it sounds like, and what the current evidence-based guidance recommends, week by week. It is designed to empower you with accurate information, not to worry you.

What pregnancy and birth do to your body

Understanding why the timeline matters starts with understanding what your body has been through. This is not about being cautious for caution's sake. There are real, specific reasons why a graduated return to exercise matters.

Relaxin and your joints. Throughout pregnancy, the hormone relaxin loosens the ligaments and connective tissue throughout your body, allowing your pelvis to accommodate a growing baby and assist with delivery. Importantly, relaxin does not switch off the moment your baby arrives. It remains elevated, particularly if you are breastfeeding, for several months after birth. This means your joints are less stable than usual, and high-impact load needs to be introduced gradually to avoid injury.

The pelvic floor. The hammock of muscles that supports your bladder, uterus, and bowel has been under significant strain throughout pregnancy, carrying the growing weight of your baby. During a vaginal birth, the pelvic floor is stretched considerably and may be torn, bruised, or weakened. Even after a caesarean section, the pelvic floor has been under nine months of pressure. Returning to high-impact activity before this has been rehabilitated risks pelvic organ prolapse and stress urinary incontinence, both of which are far more treatable when caught early than when left unaddressed for years.

Diastasis recti. The abdominal muscles separate to some degree in all pregnancies, as the midline connective tissue (the linea alba) stretches to accommodate the growing uterus. This is a normal process, not a problem in itself. But it does mean that high-load abdominal exercises, particularly sit-ups and crunches, can increase separation and interfere with recovery if done too soon. The abdominal wall needs to be progressively rehabilitated before it can manage heavy load.

The cumulative picture. Returning to intense exercise too soon carries real risks: pelvic organ prolapse, stress urinary incontinence, worsening of diastasis recti, and joint injury from overloading unstable ligaments. None of this should frighten you. It is useful context for why the guidance exists and why listening to your body matters as much as following a timeline.

The 6-week clearance: why it is outdated

This is perhaps the most important thing to understand about postnatal exercise.

Many women are told at their 6-week postnatal check that they are "cleared for exercise" or "all clear to go back to normal." This guidance is outdated, and it does not reflect current clinical understanding of postnatal recovery.

The 6-week postnatal check is a general health review. It typically covers your blood pressure, wound healing, emotional wellbeing, and how feeding is going. In many cases it lasts ten to fifteen minutes. It was never designed to be a musculoskeletal assessment, a pelvic floor assessment, or a fitness evaluation. In the vast majority of cases, no physical assessment of the pelvic floor or core takes place at the 6-week appointment at all.

POGP, the professional body for specialist physiotherapists working in pelvic, obstetric and gynaecological health, has been clear in its published guidance that the 6-week postnatal check does not constitute pelvic health clearance for return to exercise. The Royal College of Obstetricians and Gynaecologists (RCOG) guidance similarly outlines a graduated return, not a single clearance date.

Being told you are fine at 6 weeks means your general health review is complete. It does not mean your pelvic floor is ready for running, your core is ready for HIIT, or your joints are ready for heavy lifting. Those are entirely different assessments.

If you were told this at your postnatal check and went back to intense exercise at 6 weeks without symptoms, you may have been lucky. If you did experience symptoms and dismissed them because you had been "cleared," it is worth revisiting that with a pelvic health physiotherapist now.

What current guidance actually recommends

The current evidence-based framework from RCOG and POGP follows three broad stages:

This staged approach is not about restricting you. It is about building a foundation that means your return to exercise is sustainable and does not create problems that take much longer to resolve than a few extra weeks of patience.

Pelvic floor first: how to start in the first few days

Pelvic floor exercises should be the first exercise you do after birth, ideally starting within the first few days, and before any other form of exercise. This is true whether you had a vaginal birth or a caesarean, and even if the area feels sore or numb. Gentle activation helps reduce swelling, supports healing, improves circulation to the area, and begins re-establishing the connection to muscles that may feel absent or very weak in the early days.

A pelvic floor exercise is more than a simple squeeze. The movement should feel like a gentle lift inwards and upwards, as if you are trying to stop yourself passing urine or wind, with an added sense of drawing those muscles up slightly. Hold for a few seconds, then release fully and completely. The release is just as important as the contraction. A pelvic floor that is always partially braced is not a healthy pelvic floor.

Begin with short holds of three to five seconds rather than long ones, and aim for a few sets throughout the day rather than doing many repetitions at once. You can do these lying down, sitting, or standing. Progress the duration and number of repetitions gradually as you feel stronger.

If the exercises feel impossible or you genuinely cannot feel any activation, or if you have symptoms such as leaking or a sense of heaviness, please mention this to your midwife or GP early rather than waiting, and consider asking for a referral to a pelvic health physiotherapist.

Weeks 1 to 6: rest, walking, and pelvic floor

The first six weeks are for healing. That is genuinely the most useful frame for this period, not "getting back to it" but giving your body the conditions it needs to recover well.

Walking is underrated. It is cardiovascular exercise, it is weight-bearing, and it builds fitness without any impact on the pelvic floor or joints. Starting with short flat walks as soon as you feel comfortable and building the duration gradually over the weeks is one of the most beneficial things you can do in this period alongside your pelvic floor exercises. As a rough guide, start with ten to fifteen minute walks and build only if they feel comfortable, both during the walk and in the hours after.

Rest matters. Sleep deprivation and physical recovery from birth both require genuine rest. This is not optional, and it is not a sign of weakness. Rest is actively part of recovery.

What to focus on:

What to avoid in this phase:

Pay attention to how your body responds to walking not just during the walk, but in the hours that follow. Increased pelvic heaviness, soreness, or a return of lochia after activity are all signals to scale back. They are useful information, not failure.

Weeks 6 to 12: adding low-impact activity

At around 6 weeks, if things are progressing well, you can begin adding more activity. But before you do, it is worth a brief self-assessment.

Ask yourself honestly:

If the answer to any of these is yes, please see a pelvic health physiotherapist rather than pushing through. These symptoms are treatable, and treating them now is far easier than managing them years later. You do not need to stop all movement, but you do need professional guidance on how to progress safely.

If the answer to all is no, you can begin to add:

Postnatal Pilates classes are particularly well suited to this phase. They focus on core reconnection, pelvic floor, and breath coordination, which is exactly what the body needs at this stage. Look for classes explicitly described as postnatal, not just general Pilates.

Still avoid: running, HIIT, plyometrics, heavy barbell lifting, and sit-ups or crunches.

From 12 weeks: returning to running and high-impact exercise

Twelve weeks is the minimum timeframe recommended by POGP and by the Groom and Donnelly Return to Running Postnatal Guidelines (2019) before considering a return to running. It is a minimum, not a guaranteed green light. Some women are ready at 12 weeks; others need longer. The marker is how your body is functioning, not solely how many weeks have passed.

Before starting a return-to-run programme, the Groom and Donnelly guidelines recommend checking that you can:

If any of those produces symptoms, a few sessions with a pelvic health physiotherapist before you begin running is the most direct and efficient route to meeting those markers.

When you do begin, use a graduated walk-to-run programme rather than going straight back to your pre-birth distance and pace. Build run intervals slowly over several weeks. Many women find the NHS Couch to 5K structure helpful as a framework. Be honest with yourself about any symptoms that arise and treat them as signals, not inconveniences to ignore.

Returning to HIIT, jump training, and heavy lifting follows the same readiness principles. These activities create substantial pelvic floor load, and the question is always whether your pelvic floor is currently ready to manage that load.

Returning to exercise after a caesarean

The broad stages are the same after a caesarean, but there are important additional considerations.

A caesarean is major abdominal surgery. The surface wound typically heals in 6 to 8 weeks, but the deeper layers, including the uterine incision, take considerably longer. The abdominal muscles, which are separated and retracted during the procedure, need careful and gradual rehabilitation before being loaded with exercise.

Scar tissue care. From around 6 to 8 weeks, once the surface scar is healed, gentle scar massage can help manage adhesions and prevent the pulling, tightness, or sensitivity that unmanaged scar tissue can cause. This involves gentle mobilisation of the scar itself and can be taught by a physiotherapist or learned for self-management. Starting early means less scar tissue builds up; there is no need to wait until the scar is causing problems.

Weeks 1 to 6: walking and pelvic floor exercises only. No exercise that creates tension across the lower abdomen or the scar.

Weeks 6 to 12: low-impact activities as described above, with particular care around anything that pulls at the scar site or causes discomfort there. Swimming is appropriate once the scar is fully healed. Avoid core loading exercises such as sit-ups or planks, and avoid any movement that causes coning or doming across the lower abdomen.

From 12 weeks: the same graduated return, with pelvic health physiotherapy assessment especially recommended given the impact of surgery on core function. Your core has been through a major procedure and needs a proportionately thoughtful rehabilitation.

Warning signs: when to stop and seek advice

These symptoms during or after exercise are signals to stop and speak with your GP, midwife, or pelvic health physiotherapist:

These are not signs to push through or ignore. They are signals from your body that the load is more than the tissues are currently ready for. That is useful, actionable information. Working with a physiotherapist to understand and address the cause is far more effective than either stopping exercise entirely or deciding the symptoms are just something to tolerate.

Pelvic health physiotherapy: who it is for and how to access it

Every person who has given birth, vaginally or by caesarean, would benefit from a pelvic health physiotherapy assessment. This is not because birth always causes lasting problems. It is because a professional assessment is the most reliable way to know how your specific body is recovering, rather than relying on general timelines alone.

France has offered every new mother ten funded pelvic physiotherapy sessions after every birth for decades. The UK has not matched this, which means many treatable problems go unaddressed or are only picked up years later when symptoms become harder to manage.

A pelvic health physiotherapist assesses pelvic floor strength and coordination (not just strength: a tight or uncoordinated pelvic floor can cause as many problems as a weak one), checks for signs of prolapse, evaluates diastasis recti, looks at your posture and movement patterns, and provides an individualised rehabilitation programme. They are the right person to tell you when your specific body is ready for running or the gym, based on actual assessment rather than a standard timeline.

How to access one:

If you are planning to return to running, gym training, or any high-impact exercise, a single assessment before you do so is one of the most useful investments you can make in your long-term health.

Frequently asked questions

When can I start exercising after birth?

You can start pelvic floor exercises within the first few days after birth, even before any other exercise. Gentle walking can begin as soon as it feels comfortable, usually within the first week. Low-impact activities such as swimming, cycling, yoga, and Pilates are typically appropriate from around 6 weeks. Running and high-impact exercise should wait until at least 12 weeks, and ideally only after an assessment with a pelvic health physiotherapist.

Can I run at 6 weeks postnatally?

Current clinical guidance from POGP and RCOG advises against returning to running at 6 weeks. The minimum recommended timeline is 12 weeks after birth, and only once specific readiness markers are met, including being able to walk briskly for 30 minutes, perform single-leg activities, and do a double-leg hop without leaking, pain, or pelvic heaviness. The 6-week postnatal check is a general health appointment, not a fitness assessment.

When can I do sit-ups after birth?

Sit-ups and crunches are not recommended in the first 12 weeks after birth. They create significant downward pressure on the pelvic floor and can worsen diastasis recti. Core rehabilitation should start with pelvic floor exercises and diaphragmatic breathing, progressing gradually to gentle abdominal activation. A pelvic health physiotherapist can advise on your individual readiness.

What are pelvic floor exercises and when should I start them?

Pelvic floor exercises involve gently squeezing and lifting the muscles that support your bladder, uterus, and bowel. The movement should feel like a lift inwards and upwards, not just a squeeze. Hold for a few seconds, then release fully. You can start these within the first few days after birth, even if the area is sore. Starting early helps reduce swelling and begins re-establishing the connection to muscles that may feel weak or absent.

How is returning to exercise different after a c-section?

The overall timeline is similar, but a caesarean is major abdominal surgery, so the core needs a longer and more careful rehabilitation. Avoid any exercise that creates tension across the scar in the first 6 weeks. From 6 weeks, low-impact activities can be added as with vaginal birth, with attention to anything that pulls at the scar site. Scar massage from around 6 to 8 weeks helps manage scar tissue. A pelvic health physiotherapy assessment is especially recommended before returning to running or gym work after a caesarean.

What does a pelvic health physiotherapist do?

A pelvic health physiotherapist specialises in the muscles, connective tissue, and structures of the pelvic floor and lower abdomen. After birth, they assess pelvic floor strength and coordination, check for signs of prolapse, evaluate diastasis recti, and create an individualised rehabilitation programme. They can also tell you when your specific body is ready to return to running, gym training, or other activities. You can self-refer in many NHS areas, or ask your GP for a referral.

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