How activity helps sleep

How does exercise affect sleep?

Regular exercise tends to improve sleep quality in adults, but the effect is modest^1,2. The benefit shows up mostly in how people rate their sleep. Changes in measured sleep, such as sleep efficiency, are small or mixed^1,6.

Several types of activity seem to help. In older adults, tai chi, Baduanjin and resistance training (on its own or combined with walking) improved sleep quality more than usual care³. Pick something gentle you enjoy and can repeat, such as a walk, tai chi or yoga.

Timing may matter for some people. Sleep might be worse after vigorous exercise that ends an hour or less before bedtime⁷. If hard exercise late in the day leaves you restless, move it earlier or keep evening activity gentle.

How does exercise improve sleep and mood?

Regular exercise tends to improve sleep quality, and health organisations say it also lifts mood, concentration and alertness⁵. Good sleep in turn helps you manage your mood⁵.

You don't need much to start. Some physical activity is better than none, and health benefits occur below the recommended levels⁴. A leisurely walk or some gentle stretching is a fine first step. Build up slowly, with shorter sessions at a comfortable effort.

In adults aged 60 and over, Baduanjin (a gentle Chinese movement practice) tends to lower depressive symptoms⁸.

Why this happens isn't settled. One idea is that regular activity buffers stress and improves how the body responds to it⁹.

How does better sleep from exercise help mental health?

Better sleep seems to help mental health, but the link is mostly an association. About a fifth of the link between being more active and having fewer depression symptoms appears to run through sleep¹⁰. That shows the two go together; it doesn't prove that better sleep causes the change.

Exercise also seems to help in its own right, not only through sleep. The WHO guidelines say physical activity decreases symptoms of anxiety and depression⁴.

Rest matters too. Good sleep can make a big difference to mental wellbeing, help you feel more in control and help you focus¹¹. Treat sleep and activity as partners: a rested night can make the next day's walk easier, and a walk may help the night.

How does activity improve sleep?

Structured exercise programmes improve sleep quality, but exactly how isn't firmly established. Most programmes lasted 10 to 16 weeks¹, so they tested sustained effort rather than small or very gentle amounts.

Two suggested routes are steadier daily body-clock rhythms, seen alongside better sleep after a 12-week Baduanjin programme, and a calmer nervous system from slow, controlled breathing and focused attention⁸.

No single activity is clearly best. Walking, qigong and high-intensity interval training showed the largest benefits for sleep quality compared with active controls⁶. In adults with insomnia, walking or jogging may greatly reduce how severe the insomnia is¹².

Walking is a sensible, low-cost way to start. Try the same walk at a similar time most days. Short bouts are worth doing; build up the time and effort gradually.

How does better sleep from exercise improve your days?

The daytime gains from exercise-related sleep aren't clear yet. Daytime functioning, quality of life and fatigue didn't improve clearly overall^1,13, though walking or jogging may ease daytime dysfunction in people with insomnia¹².

In general terms, good sleep helps you feel more in control and focus better. You're also more likely to feel like being active the next day if you feel well rested¹¹.

So look at your own days. Over a couple of weeks, jot down a few notes on your energy, mood and focus after a better night and after a poorer one. That can show you what works for you.

Do mind-body practices improve sleep?

Yes, they appear to improve sleep quality, mainly as people rate it themselves¹⁴. Pilates, yoga and traditional Chinese exercises each improved sleep quality compared with no exercise². No one practice is clearly best. The benefit looks somewhat larger in adults over 60 than in younger adults¹⁴.

Yoga is less clear. It may help sleep quality in women with sleep problems but may not reduce insomnia itself¹⁵. A 2019 guideline from the US Department of Veterans Affairs and Department of Defense made no recommendation for or against yoga for insomnia¹⁶.

Practising at least twice a week gave somewhat better sleep than once a week, and longer programmes did a little better than shorter ones¹⁴.

• Look for a beginner or gentle class, in person or a trusted community or health-service video, and go at your own pace.
• Aim for two sessions a week and give it a few months before judging.
• Tell any instructor about your health conditions or injuries before you start.
• If a pose or movement hurts, ease off.

How do sleep and exercise work together for the brain?

The picture is early, and how the two work together in the brain is mostly still a hypothesis. In older adults, even small amounts of moderate-to-vigorous or light activity may lessen the link between poor sleep and weaker thinking¹⁷. Light activity counts, so a gentle walk is a reasonable start.

Activity doesn't make up for short sleep, though. The thinking benefit of more frequent, higher-intensity activity wasn't enough to offset the faster decline linked to short sleep in older adults¹⁸. Adults need at least 7 to 8 hours of sleep a night, and shortchanging sleep slows thinking and reaction time¹⁵. Look after your sleep routine alongside being active: a regular bedtime and wake time are a good place to start.

One proposal is that exercise can create a helpful brain state during sleep for processing memories¹⁹.

When to check with a health professional

If you're starting exercise after a long break, it's always a good idea to see your doctor first.

For an injury or a health condition, see a health professional, such as your doctor or a physio.

Call your local emergency number for chest pain or pressure (or pain spreading to the arm, neck, jaw or back, especially with sweating or feeling sick), severe breathlessness, fainting or collapse, signs of a stroke, a serious injury, or someone who isn't safe.

A sore muscle or joint is a sign to ease off; see a doctor or other health professional if it persists or gets worse.

Poor sleep that keeps going, unusual tiredness, or loud snoring or gasping at night are worth getting checked by a doctor. Activity is not a replacement for any treatment or medicines you have been given, and you shouldn't change them without talking to your doctor.

If low mood or anxiety is lasting or getting in the way of daily life, talk to a doctor or a mental health service.