At a glance:
- Regular training reduces the time it takes to fall asleep and improves sleep quality, especially in middle-aged and older adults.
- The effects develop over time — aim to train consistently for several weeks rather than expecting results after one workout.
- Moderate-intensity training in the evening usually does not disrupt sleep, provided you avoid a very high training load immediately before bedtime.
- Physical activity and sleep influence each other in both directions: better sleep also supports recovery from training.
Training and sleep go hand in hand: physical activity is one of the few drug-free approaches that help you fall asleep more easily and sleep more deeply. This review explains how training affects sleep, how much physical activity to get and when, and what the evidence says about evening workouts — all based on peer-reviewed research.
How are training and sleep connected?
Training and sleep have a two-way relationship: physical activity improves sleep, and good sleep in turn supports recovery from training (Kline, 2014). A large meta-analysis linked regular physical activity to better self-reported sleep quality and a shorter time to fall asleep (Kredlow et al., 2015). The effects are not limited to one type of training — both aerobic and strength training are beneficial, as is more varied functional training, which challenges your body through natural movement patterns.
Sleep usually improves over several weeks, rather than as a result of one workout. A meta-analysis by Banno et al. (2018) found that a regular training program improved overall sleep quality in adults and reduced the need for sleep medication. This means consistency matters more than a one-off effort.
How much and how intensely should you train?
The World Health Organization recommends that adults get at least 150–300 minutes of moderate-intensity aerobic physical activity per week (WHO, 2020). The same amount that supports cardiovascular health and fat burning typically also benefits sleep.
A systematic review found that regular training improved both sleep quality and daytime alertness in middle-aged and older adults with sleep problems (Yang et al., 2012). There is no need to take intensity to extremes: a moderate training load also produces results, although more vigorous training, such as plyometric training, may suit you if you are fitter. It is important to increase your training load gradually to avoid overtraining, which can actually worsen sleep.
Does evening training disrupt sleep?
A common concern is that an evening workout will ruin your sleep. A systematic meta-analysis found that evening training generally does not worsen sleep and may even slightly improve sleep quality — the exception is very intense exertion that ends less than an hour before bedtime (Stutz et al., 2019). The practical advice is to leave a buffer between intense training and bedtime, allowing your body temperature and arousal levels to drop.
Training also affects your hormonal profile, which is in turn linked to sleep and recovery — the article on testosterone and training explores this in more detail. Good sleep and regular physical activity are both part of healthy aging, which WHO addresses in its healthy aging framework (WHO, 2020).
When will you notice the effects of training on sleep?
The effects develop gradually. Kredlow et al. (2015) found that lasting improvements were more likely to follow regular training than isolated workouts. A realistic expectation is that, after several weeks of consistent physical activity, you will gradually find it easier to fall asleep and begin to sleep more deeply. It is therefore worth treating training as a long-term investment in both your fitness and your sleep.
References
- Kline, C. E. (2014). The bidirectional relationship between exercise and sleep: implications for exercise adherence and sleep improvement. American Journal of Lifestyle Medicine. PMID: 25729341
- Kredlow, M. A., Capozzoli, M. C., Hearon, B. A., Calkins, A. W., & Otto, M. W. (2015). The effects of physical activity on sleep: a meta-analytic review. Journal of Behavioral Medicine. PMID: 25596964
- Yang, P. Y., Ho, K. H., Chen, H. C., & Chien, M. Y. (2012). Exercise training improves sleep quality in middle-aged and older adults with sleep problems: a systematic review. Journal of Physiotherapy. PMID: 22884182
- Stutz, J., Eiholzer, R., & Spengler, C. M. (2019). Effects of evening exercise on sleep in healthy participants: a systematic review and meta-analysis. Sports Medicine. PMID: 30374942
- Banno, M., Harada, Y., Taniguchi, M., et al. (2018). Exercise can improve sleep quality: a systematic review and meta-analysis. PeerJ. PMID: 30018855
- World Health Organization (2020). WHO guidelines on physical activity and sedentary behaviour. WHO. https://www.who.int/publications/i/item/9789240015128
Frequently asked questions
Does training help you sleep better?
Yes. Regular physical activity reduces the time it takes to fall asleep and improves sleep quality, especially if you have sleep problems (Kredlow et al., 2015).
How long do you need to train before your sleep improves?
The effects usually develop over several weeks of consistent training, rather than after one workout. Consistency is the key to results.
Is it OK to train in the evening?
Usually, yes. Moderate-intensity training in the evening does not worsen sleep; you only need to avoid a very high training load immediately before bedtime (Stutz et al., 2019).
How much physical activity should you get each week?
WHO recommends that adults get at least 150–300 minutes of moderate-intensity aerobic physical activity per week, which supports both overall health and sleep (WHO, 2020).
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