You already know a workout can clear your head after a brutal day. What is less well known is how strong the research behind that feeling has become. Large reviews now put exercise among the most useful tools for easing stress, anxiety and low mood. Here is what the evidence says, how much you need, and where its limits are.
Key takeaways
- A 2024 BMJ network meta-analysis of 218 trials found that walking or jogging, yoga and strength training all produced meaningful drops in depressive symptoms.
- A 2023 umbrella review of more than 1,000 trials found exercise reduced depression and anxiety symptoms across many groups of adults, with moderate-to-vigorous effort giving bigger gains.
- You don’t need marathon volumes. Even half the standard activity guideline was linked to lower depression risk in a 2022 meta-analysis.
- Choose what you will keep doing. Intensity matters more than the exact type.
- Exercise complements professional treatment for depression or anxiety. It does not replace it.
What the big studies show
Single small trials on exercise and mood are easy to find, and they often disagree. So it is more useful to look at reviews that pool hundreds of them.
The 2024 BMJ network meta-analysis
In 2024, Michael Noetel and colleagues published a systematic review and network meta-analysis in The BMJ. It pooled 218 randomised trials with more than 14,000 people diagnosed with depression, and compared types of exercise against each other and against control conditions.
Compared with active controls, the effect sizes (Hedges’ g, where about 0.5 is considered a moderate effect) were:
| Exercise type | Effect on depressive symptoms (g) | Trials |
|---|---|---|
| Walking or jogging | −0.62 (moderate) | 51 |
| Yoga | −0.55 (moderate) | 33 |
| Strength training | −0.49 (moderate) | 22 |
| Mixed aerobic exercise | −0.43 (small to moderate) | 51 |
| Tai chi or qigong | −0.42 (small to moderate) | 12 |
Two points matter. First, more intense exercise was linked to bigger improvements, and the authors noted that intensity seemed to matter more than total volume. Second, strength training and yoga were among the best-tolerated options, meaning people were more likely to stick with them.
The authors were also honest about the weak spots. Confidence in the evidence was rated low for walking or jogging and very low for the other types, mainly because many trials were small or not blinded. That is common in exercise research, since you cannot hide from people whether they are exercising.
The 2023 BJSM umbrella review
A 2023 umbrella review led by Ben Singh in the British Journal of Sports Medicine went even broader. It pulled together 97 reviews covering 1,039 trials and about 128,000 adults, including healthy people, people with depression and people with chronic diseases.
The main findings:
- Physical activity reduced depression and anxiety symptoms compared with usual care, with median effect sizes of about −0.43 for depression and −0.42 for anxiety.
- Higher intensity gave larger benefits for depression, with median effects of about −0.22 for low, −0.56 for moderate and −0.70 for high intensity.
- Programmes of 12 weeks or less showed the largest effects, so you don’t need to wait months to see a change.
- All types of exercise helped, and strength-based training showed one of the largest effects on depression.
The caveat: most of the included reviews were rated “critically low” in quality, and the evidence leans heavily on mild-to-moderate depression. The direction is clear, but the exact size of the benefit is less certain.
What about anxiety and stress?
The anxiety data is thinner but points the same way. A 2018 meta-analysis in BMC Health Services Research found that aerobic exercise reduced anxiety symptoms compared with waiting-list controls, and that higher-intensity programmes worked better than low-intensity ones. It included only 15 trials, so treat it as encouraging rather than final.
How much exercise for stress actually helps?
The best news for busy men is that you do not need huge volumes.
A 2022 meta-analysis in JAMA Psychiatry by Matthew Pearce and colleagues pooled 15 studies with more than 190,000 people. Compared with inactive adults:
- Doing about half the recommended activity (around 75 minutes a week of brisk walking) was linked to roughly 18% lower risk of depression.
- Meeting the guideline (around 150 minutes a week of brisk walking) was linked to about 25% lower risk.
- Most of the benefit came from going from nothing to something, with only small extra gains beyond that.
These are observational studies, so they show association rather than proof. But combined with the trial data, a practical target is clear.
| Goal | Weekly dose | Example for a busy week |
|---|---|---|
| Minimum useful | About 75 min moderate activity | Three 25-minute brisk walks |
| Guideline (WHO) | 150–300 min moderate, or 75–150 min vigorous, plus 2 days of strength | 2 strength sessions + 3 × 30 min walks or rides |
| Higher-intensity option | Some sessions at “hard to talk” effort | 1 interval session + 2 strength sessions + daily walks |
The World Health Organization recommends 150–300 minutes of moderate activity, or 75–150 minutes of vigorous activity, each week, plus muscle-strengthening work on two or more days. If you train three to four hours a week, you are already there. The question is whether some of that effort is moderate to hard and whether you keep it up.
Which type should you choose?
The honest answer: the one you will do consistently, at an effort that feels challenging.
Walking, jogging and cycling
Walking or jogging had the largest effect in the BMJ analysis, and it is the easiest to fit around work and family. A brisk 30-minute walk at lunch or after dinner counts. If you want more structure, our guide to Zone 2 training explains how to build an aerobic base.
Strength training
Lifting showed moderate benefits in both reviews, and the BMJ analysis found it among the best-tolerated options. For men over 35, it also protects muscle, bone and metabolic health. Two to three full-body sessions a week is plenty. If you’re new or coming back, start with our strength training after 35 guide.
Yoga and tai chi
These combine movement, breathing and focus. Yoga performed well in the BMJ analysis, and both are gentle on joints. They are good options on high-stress or low-energy days.
Team sports and group sessions
Cricket, football, padel or a running club add social contact, which has its own value for mental health. If you enjoy a sport, it counts.
Make it work in a busy week
- Anchor sessions to fixed times. Early morning before the family wakes up, or lunchtime, is less likely to get cancelled.
- Use the “minimum dose” rule. On bad days, do 10–15 minutes. Something beats nothing, and it keeps the habit alive.
- Push some of the effort. Include at least one session a week where you breathe hard. Intensity was linked to bigger mood gains.
- Get outdoors when you can. A walk in daylight also helps your body clock and sleep.
- Track mood, not just lifts. Rate your stress from 1 to 10 before and after sessions for a couple of weeks. It helps you see the payoff.
- Don’t overdo it when stressed. Heavy life stress can slow recovery. Read our guide to chronic stress recovery to adjust training on tough weeks.
Exercise complements treatment. It doesn’t replace it
Headlines about exercise being “better than medication” are misleading. The reviews compared exercise with usual care or control groups, and only a few trials compared it directly with antidepressants or therapy. The authors of both reviews describe exercise as part of a treatment package, not a stand-alone cure.
If you have been diagnosed with depression or an anxiety disorder, keep working with your doctor or therapist and add exercise alongside. Do not stop or change any medication without medical advice. And if your low mood is making it hard to get out of bed, that is a sign to get help first, not a test of willpower.
Safety note: If you have heart disease, high blood pressure, chest pain on effort, or have been inactive for a long time, check with your doctor before starting vigorous exercise. If you feel low, anxious or hopeless most days for two weeks or more, talk to a doctor or a mental-health professional. If you have thoughts of harming yourself, contact local emergency services or a crisis line immediately (in the US, call or text 988).
FAQ
How quickly does exercise improve mood?
Many people feel calmer after a single session, but trials typically measure changes over several weeks. Most programmes in the reviews ran for 12 weeks or less, so give it at least a month of consistent effort.
Is lifting as good as cardio for stress?
Both help. In the 2024 BMJ analysis, walking or jogging had the largest effect, with strength training not far behind. In the 2023 umbrella review, strength-based training showed one of the largest effects on depression. Doing both is ideal.
Does it have to be intense?
Any movement is better than none, but moderate to vigorous effort was linked to bigger benefits. If you are new to exercise, build up gradually over a few weeks before adding harder sessions.
Can exercise replace antidepressants or therapy?
No. Exercise is a strong complement to treatment, but decisions about medication or therapy should be made with your doctor. Never stop medication abruptly.
What if I am too tired or stressed to work out?
Start very small: a 10-minute walk. Short, easy sessions still count and often improve energy. If fatigue lasts for weeks, see our guide on always feeling tired after 35 and talk to your doctor.
Related reading: Men’s mental health after 35 and why friendships matter for midlife men.
Free tool: make movement a daily habit with a 30-day challenge (steps or 10-minute mobility).
Sources
- Noetel M, et al. Effect of exercise for depression: systematic review and network meta-analysis of randomised controlled trials. BMJ. 2024;384:e075847.
- Singh B, et al. Effectiveness of physical activity interventions for improving depression, anxiety and distress: an overview of systematic reviews. Br J Sports Med. 2023;57(18):1203–1209.
- Pearce M, et al. Association between physical activity and risk of depression: a systematic review and meta-analysis. JAMA Psychiatry. 2022.
- Aylett E, Small N, Bower P. Exercise in the treatment of clinical anxiety in general practice: a systematic review and meta-analysis. BMC Health Serv Res. 2018.
- World Health Organization. Physical activity recommendations.
This article is for general education and is not medical advice. Check with your doctor before starting a new training or nutrition plan, especially if you have a health condition.
