As the weather turns, the choice between training outdoors or indoors comes down to a few practical things: how the cold and dark affect your motivation, how comfortable you are exercising outside, and what's realistically available to you. Time in nature is linked to real mental health benefits, with 70% of UK adults saying being close to nature improves their mood, and 49% saying it helps them cope with stress (Source: Mental Health Foundation, 2021). Moving indoors, meanwhile, removes weather as a barrier, which for many people means training happens more consistently through autumn and winter.
Who this is for
You've noticed the mornings and evenings getting darker, and you're weighing up whether to keep training outdoors through autumn and winter or shift indoors until the weather improves. There's no single right answer, so this article sets out what each option offers and how to do either one safely and comfortably.
What outdoor exercise offers
Beyond the physical activity itself, being outdoors and in nature has a documented link to better mood and lower stress. In Mental Health Foundation research, 70% of UK adults said being close to nature improves their mood, 49% said it helps them cope with stress, and 44% said it makes them feel less anxious or worried (Source: Mental Health Foundation, 2021). Walking, running, or cycling outdoors combines physical activity with that benefit in a way that an indoor session doesn't automatically replicate.
If you decide to keep training outdoors as it gets colder, a few practical things help: layering clothing so you can adjust as you warm up, wearing shoes with good grip since paths get wet and icy, and covering your mouth with a scarf in very cold air, which can help reduce the risk of chest infections, something the NHS specifically advises for people more vulnerable to cold weather, including those aged 65 and over or with a long-term health condition (Source: NHS, 2026).
What indoor training offers
Moving indoors removes the weather as a reason to skip a session, which for a lot of people is the difference between training happening consistently through winter or not. Indoor options don't need to mean an expensive gym membership: bodyweight workouts, resistance band training, yoga, or an indoor class all count, and many can be done at home with very little space or equipment.
If you switch indoors for winter, it's worth choosing something you can keep up easily, since consistency matters more than the specific format.
A middle path
Plenty of people do both: outdoor sessions on drier, brighter days when conditions and daylight allow, and indoor training as a reliable fallback on darker or wetter days. This way you get some of the nature-related benefit when the weather cooperates, without training grinding to a halt when it doesn't.
Time spent outdoors and in nature is linked to real mental health benefits, including improved mood and lower stress, reported by a majority of UK adults in Mental Health Foundation research (Source: Mental Health Foundation, 2021). Outdoor exercise in colder months is safe for most people with sensible precautions: layered clothing, grippy footwear, and covering the mouth in very cold air, with extra care for those aged 65 and over or with a long-term health condition (Source: NHS, 2026). Indoor training removes weather as a barrier and can make consistency easier through autumn and winter. Many people combine both, training outdoors when conditions allow and indoors as a reliable fallback, rather than treating it as an either-or choice.
Questions people often ask
For most people, yes, with sensible precautions such as layered clothing and shoes with good grip on wet or icy paths. People aged 65 and over, or with a long-term health condition, are more vulnerable to cold weather and may want to take extra care, such as covering the mouth with a scarf in very cold air (Source: NHS, 2026).
Layering is the main principle, since it lets you adjust as you warm up during the session. Footwear with good grip matters as paths get wet and icy, and covering your mouth in very cold air can help reduce the risk of chest infections for those more vulnerable to cold (Source: NHS, 2026).
Time in nature specifically is linked to improved mood and reduced stress for most people, with 70% of UK adults reporting a mood benefit from being close to nature in Mental Health Foundation research (Source: Mental Health Foundation, 2021). Indoor exercise still offers physical activity benefits; it's the added nature element that outdoor training brings.
That depends on what keeps you consistent. If cold or dark evenings make you likely to skip outdoor sessions, moving indoors, even informally with bodyweight or resistance band training at home, can help you keep training regularly through autumn and winter.
Combining approaches works well for many people: training outdoors on brighter, drier days for the mood benefit, and having a simple indoor option ready for darker or wetter days, so a change in weather doesn't mean skipping activity altogether.
This article is for general information only and is not a substitute for professional medical advice. If you are concerned about a specific symptom, please see a GP or other qualified healthcare provider.