Does exercise really help with depression and anxiety?

Yes, exercise genuinely helps. Large analyses of randomised trials show that physical activity strongly reduces depressive symptoms and moderately to strongly reduces anxiety symptoms. These are not survey results from people who feel 'a bit down', but measurements taken in people with an established diagnosis, across tens of thousands of participants worldwide. This makes exercise one of the best-supported non-pharmacological treatments in psychiatry.

For mild to moderate depression, exercise works just as well as antidepressants. For anxiety disorders, the effect is slightly smaller than with medication, but still significant. Nor do you have to choose one or the other: exercise actually enhances other treatments. A broad scientific review concludes that exercise can be prescribed as a fully fledged treatment for depression, anxiety and stress, including concrete recommendations for type and amount.

Both cardio training (running, cycling) and strength training are effective. A small study with 28 participants showed that eight weeks of strength training strongly reduced anxiety symptoms in young adults. Notably, there was no measurable effect specifically on rumination and worry. Because the study was small, this distinction requires confirmation in larger research.

There are additional findings for specific groups. In older cancer patients, yoga and tai chi as well as regular physical exercise helped with depression and anxiety, with mind-body movement scoring slightly better¹. In Parkinson's disease, mindfulness yoga reduced anxiety and depression more effectively than conventional stretching and strength training. And for pregnant women it has been shown that regular exercise contributes to the prevention of anxiety and prenatal depression, with no demonstrable risk to mother or child, provided the type and intensity are well matched.

A few caveats do apply. For severe or persistent symptoms, exercise does not replace professional care. The effect on rumination specifically appears limited, even though exercise does help with broader anxiety symptoms. For almost everyone, exercise is a meaningful and safe addition, both as a treatment and as prevention of depression and anxiety.