Exercise and mental health: what it does for depression and anxiety, and its limits

How common mental disorders are

According to the World Health Organization, nearly one person in seven worldwide, 1.2 billion people, was living with a mental disorder in 2023, with anxiety and depressive disorders the most common. WHO counts 470 million people living with an anxiety disorder and 322 million with depression. It also notes that effective prevention and treatment exist, but that most people do not have access to them.

Exercise is not the whole answer to that gap, but it is one of the few tools that is free, available without a waiting list and good for the body at the same time.

What the evidence shows

Three large analyses give a consistent picture.

• Symptoms of depression, anxiety and distress. The umbrella review by Singh and colleagues pooled 97 reviews, 1,039 trials and 128,119 participants. Compared with usual care, physical activity had medium effects on depression, anxiety and psychological distress, in healthy adults, in people with a diagnosed mental disorder and in people with chronic disease. Higher-intensity activity was associated with greater improvement.
• Treating depression. The BMJ network meta-analysis by Noetel and colleagues included 218 studies and 14,170 participants. Walking or jogging, yoga, strength training, mixed aerobic exercise and tai chi or qigong all produced moderate reductions in depression. The effects were proportional to the intensity prescribed, and strength training and yoga were the best tolerated. The authors note that confidence in the evidence was low or very low, largely because participants cannot be blinded.
• Prevention. The meta-analysis by Schuch and colleagues followed 266,939 people in 49 prospective studies. Those with high levels of physical activity had lower odds of developing depression than those with low levels, in young people, adults and older adults alike.

What the health services say

The NHS describes regular exercise as able to boost mood in people with depression, and as especially useful in less severe depression. Its advice is pragmatic: any type of exercise is useful as long as it suits you and you do enough of it, and it should be something you enjoy, otherwise it will be hard to keep up. If you have not exercised for a while, start gradually and build up towards 150 minutes a week.

NICE, which writes clinical guidelines for England, includes group exercise among the first-line treatment options for a new episode of less severe depression. It describes a group programme led by a trained practitioner, designed for people with depression, usually with more than one session a week for about ten weeks. Exercise sits in that list alongside psychological therapies and medication, as one option to discuss with a clinician.

Which exercise, and how much

From these sources, a practical approach for mood:

1. Choose what you will repeat. Walking, running, cycling, yoga and strength training all have evidence behind them. Enjoyment predicts whether you keep going.
2. Aim for the general target of 150 minutes of moderate activity a week, built up gradually.
3. Add some intensity when you can. Both large reviews associated higher intensity with larger benefits, so a few brisk or harder efforts each week are worth including once the habit is in place.
4. Train with others if it helps. NICE's recommended format is a group, and a shared appointment is harder to skip.

The calculator on this page checks three habits that protect against stress: weekly activity against the WHO target, sleep against seven hours, and a short daily moment of calm. On the last two, our guides on sleep for executives and coherent breathing go further, and reduce stress brings the methods together.

Where exercise stops being enough

Exercise supports mental health; it does not replace care. If you think you may be depressed, if sadness or anxiety persist for weeks, or if they come with thoughts of self-harm, see your doctor without delay: the NHS stresses that it is best not to wait. In the UK, the NHS advises calling 111 and selecting the mental health option for urgent help, and 999 in an emergency. Elsewhere, call your local emergency number.

If training starts to feel compulsive, or becomes a way of punishing yourself, mention it to a professional too. Burnout has its own logic, covered in burnout and exercise. If your head is too full to start, mental load and training explains how to make the habit automatic so that it needs less willpower.

Train with friends on Never Skip Club

The format that NICE recommends, a regular group session, is close to what Never Skip Club offers. The free app builds a guided session in a minute: choose a body area, a level (Easy, Moderate or Intense), 20, 30 or 45 minutes and a place, then follow five or six exercises shown in animation. In a crew of three to seven friends, you agree a rhythm, for example three sessions a week for a month. A session counts from 30 minutes, and the ranking rewards regularity, not performance, so a hard week does not make you lose face.

Create your free account, start with an Easy session and invite one or two friends you trust. If you would like a professional to structure your training, you can book a coach from our network. A coach does not replace a doctor or a therapist, but can make the sessions happen.