How Do I Keep Exercising in Pregnancy When It's Dark, Cold and Slippery Outside?

The target itself does not change when the weather does: the UK Chief Medical Officers' guidance for pregnant women is "at least 150 minutes of moderate intensity activity every week" plus muscle strengthening activities twice a week, and it applies in December exactly as it does in June. What changes is where those minutes happen — the outdoor walk becomes stairs, indoor laps, a stationary bike, a pool, a chair-supported strength circuit or a living-room dance, and the week gets rebuilt around whichever of those you can actually reach on a wet Tuesday.

That is the whole answer. The rest of this is the swaps, the weekly shape by trimester, and the short list of symptoms that mean stop and phone someone.

Before any of it: whose advice outranks this page

If you have a pregnancy complication, a condition your team is monitoring, or anything described to you as high risk, your midwife or obstetrician's instructions come first and this article comes nowhere. The same goes if you have been told to limit or stop activity. Tommy's lists conditions where you should not start exercising without talking to your team first, including vaginal bleeding, deep stomach or pelvic pain, a low-lying placenta (placenta praevia) and a weak cervix (cervical incompetence).

The NHS puts the general version simply: "If in doubt, consult your maternity team."

What the guidelines actually say

Four bodies, one broadly consistent message.

UK Chief Medical Officers (infographic updated 16 July 2026). "Throughout pregnancy aim for at least 150 minutes of moderate intensity activity every week," across home, leisure and daily activity; muscle strengthening activities twice a week. The examples given are ordinary: climbing stairs, yoga, swimming, gym, carrying shopping, cycling, dancing, walking. Three lines from it are worth keeping: "Every activity counts, every minute counts, more is better." "Listen to your body and adapt." And the one everybody remembers — "Do not bump the bump."

World Health Organization (2020 guidelines). At least 150 minutes of moderate-intensity aerobic activity a week, with "a variety of aerobic and muscle-strengthening activities," and "adding gentle stretching may also be beneficial." Also: limit sedentary time, and replacing it with activity of any intensity, including light, brings benefit.

NHS (page reviewed March 2023). "Try to keep active on a daily basis — 30 minutes of walking each day can be enough, but if you cannot manage that, any amount is better than nothing." Use the talk test: "If you become breathless as you talk, then you're probably exercising too strenuously."

NHS inform (updated December 2023). The 150 minutes can be broken into "10 or 15 minutes at a time." That single sentence is the one that makes a dark December work — fifteen minutes, ten times a week, satisfies the target on its own.

What actually changes between September and January

Not your capacity. Your daylight, and the surface you are walking on.

UK total hours of bright sunshine by month, 2025. Source: Met Office, HadUK-Grid areal series for the UK ([metoffice.gov.uk](https://www.metoffice.gov.uk/pub/data/weather/uk/climate/datasets/Sunshine/date/UK.txt)).*

In 2025 the UK recorded 140.0 hours of bright sunshine in September and 63.0 in October — under half — then 60.6 in November and 46.5 in December. That is the practical reason a habit that survived all summer falls over in the second week of October. It is not motivation. The window closed.

The other change is footing. The NHS flags activities with a high risk of falling as things to approach with caution in pregnancy, and NHS inform advises stopping cycling after six months for the same reason. Wet leaves, black ice and unlit paths move an ordinary walk into that category without you deciding anything.

The indoor swaps

Same minutes, different room. Every replacement below is drawn from the activity types the official guidance already names.

1. The outdoor walk becomes an indoor walk. Stairs are on the CMOs' own example list. So are supermarkets, shopping centres, museums, a long corridor at work, and walking on the spot with a programme on. Flat, lit, dry, available at 8pm.

2. The pavement becomes a treadmill. Same activity, controlled surface, handrail there if your balance has changed.

3. The bike becomes a stationary bike. NHS inform names "brisk walking and swimming or using a static bike." The static version keeps the cycling and removes the falling.

4. The cold becomes a pool. The NHS notes you might like to try swimming because the water supports you, and NHS inform points to aquanatal classes. In December a heated pool is a better proposition than it sounds.

5. The gym class becomes a home class. Yoga and dancing are both on the CMOs' example list, and both work in a two-metre square. After the first trimester, choose sessions that do not spend time flat on your back.

6. The strength half moves to a chair. Muscle strengthening twice a week is part of the guidance, not an extra. A chair, a wall and a couple of shopping bags will do it.

7. The lost commute becomes the sedentary fix. WHO's "replace sedentary time with activity of any intensity" is the low bar that still counts on the worst days.

A few things stay off the list whatever the weather. The NHS says to avoid contact sports, scuba diving and exercising above 2,500m altitude, and not to lie flat on your back for long periods, particularly after 16 weeks. Leicestershire Partnership NHS Trust's leaflet adds hot yoga and hot pilates; WHO adds excessive heat and high humidity generally.

The weekly shape, by trimester

This is one way to arrange the official 150 minutes indoors — not a new prescription, and not a substitute for what your own team tells you. Adjust it down freely; "every minute counts" is the actual guidance.

First trimester — when nausea and tiredness set the ceiling. Short and frequent rather than planned and heroic: five 15-minute sessions of indoor walking or stairs (75 minutes), two 20-minute sessions of home yoga or gentle stationary cycling (40 minutes), two 15-minute chair-based strength sessions (30 minutes). Nothing in a single block over 20 minutes. On days it does not happen, the NHS line stands — any amount is better than nothing.

Second trimester — usually the easiest stretch. Three 30-minute sessions (indoor walking, a swim, a static bike) and two of 20 minutes (dance, yoga) gives 130 minutes of aerobic work, plus two 20-minute strength sessions on top. From 16 weeks, switch anything performed lying flat on your back to a side-lying or seated version.

Third trimester — balance changes, so the pool earns its place. Four 20-minute sessions plus three of 15 minutes spreads the load and keeps any single effort short. Keep the two strength sessions, seated or holding a support, and expect to slow down — the NHS explicitly says you may need to.

Across all three, the talk test is the only intensity gauge you need. If you cannot hold a conversation, ease off.

Stop, and call your midwife or maternity unit

Leicestershire Partnership NHS Trust tells women to contact their local birthing unit immediately for: vaginal bleeding; regular painful contractions; amniotic fluid leakage; shortness of breath before effort; dizziness; headache; chest pain; muscle weakness affecting balance; and calf pain or swelling. Tommy's carries the same list and adds palpitations, abdominal pain and feeling faint.

Separately, and regardless of exercise, the NHS is unambiguous about movements: "Call your midwife or maternity unit immediately if: your baby is moving less than usual, you cannot feel your baby moving anymore, there is a change to your baby's usual pattern of movements." And: "Do not wait until the next day — call immediately, even if it's the middle of the night."

Nothing on this page is worth finishing a session over.

When the motivation goes at the same time as the light

Move the session before the dark rather than after it — a 15-minute walk at lunchtime survives October in a way a 6pm one does not. Put it where you already are: stairs at work, the pool on the way home, the mat next to the sofa. And lower the unit, because ten minutes done is worth more than forty planned.

Which version of this week is actually yours?

The quiz below takes two minutes. Six questions about where you are and what you can reach, and it points you at one of four starting shapes. No email, nothing stored.

Frequently asked questions

Is 150 minutes a week really still the target in winter?

Yes. The UK Chief Medical Officers' guidance is "at least 150 minutes of moderate intensity activity every week" throughout pregnancy, and WHO gives the same figure. Neither has a seasonal variant. What the guidance does allow is flexibility in how you assemble it: NHS inform says the 150 minutes can be taken "10 or 15 minutes at a time," and the CMOs' framing is "every activity counts, every minute counts." Ten minutes of stairs at lunchtime is not a consolation prize, it is the method.

Is it safe to walk outside in the cold and dark while pregnant?

Walking is on every official list of recommended pregnancy activity. The caution is about the surface and the fall risk rather than the temperature: the NHS treats activities with a high risk of falling as ones to approach carefully, and NHS inform advises stopping cycling after six months for that reason. Ice, wet leaves and unlit paths are the specific issue. If the route is lit, gritted and flat, the cold on its own is not a reason to stay in.

What indoor exercise is safe in the third trimester?

Indoor walking, stationary cycling, swimming and aquanatal classes, modified yoga and chair-based strength work all sit inside the activity types the guidance names. Avoid anything that keeps you flat on your back for long periods, particularly after 16 weeks; the NHS also lists contact sports, scuba diving and altitude above 2,500m. Your own team may add to that list, and if they do, theirs is the list that counts.

Can I start exercising in pregnancy if I was not active before?

The CMOs' guidance says directly: "If you're not active, start gradually." WHO notes that women who habitually did vigorous exercise beforehand can usually continue it, which is not the same as starting it. Practically, that means beginning with walking, swimming or gentle yoga in short sessions and adding minutes rather than intensity. Health & Fitness with Ella's general position on this is the unglamorous one: the first month is about building a slot in the week, not a workout.

Do I need to tell my midwife I am exercising?

It is worth mentioning at your next appointment, particularly if you are starting something new, if anything about the pregnancy is being monitored, or if you have been given any activity restrictions. The NHS's standing advice is "if in doubt, consult your maternity team." They can also tell you whether a local aquanatal or pregnancy class is suitable for you specifically, which a general article cannot.

Does muscle strengthening really need to happen twice a week?

That is what the guidance asks for — the CMOs' pregnancy infographic specifies muscle strengthening activities twice a week, and WHO recommends a variety of aerobic and muscle-strengthening activities. It does not have to be a gym. Sit-to-stands from a chair, wall press-ups, bag carries and banded rows cover it in fifteen minutes, twice a week, in a room you are already in.

What if I miss a whole week?

Then you missed a week. The guidance has no penalty structure and no streak. The NHS line — "if you cannot manage that, any amount is better than nothing" — exists precisely for the weeks that fall apart. Restart at the ten-minute unit rather than trying to make up the total.

The free checklist for the energy problem underneath this

If the thing stopping you is not the weather but running on empty, start there. The Mom Energy Reset Checklist is a five-minute routine — breathing, hydration, a short reset — for the days when a plan is not the missing piece. It is free.

Get the Mom Energy Reset Checklist https://healthandfitnesswithella.com/mom-energy-reset-checklist

If you want the trimester-by-trimester version in full

This article gives you one week. Fit to Be Pregnant is the whole run: safe workouts laid out for each trimester, nutrition guidance alongside them, short routines for weeks with no time, and instructions written for someone starting from zero. It is €12.99.

Read about Fit to Be Pregnant https://healthandfitnesswithella.com/fit-to-be-pregnant1

This is general information, not medical advice. Speak to your GP, midwife or maternity team if you have any pregnancy complication, have been told your pregnancy is high risk, have been advised to limit activity, or if anything on the stop list above happens during or after a session. Their advice replaces anything written here.

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