Most psychological problems – such as chronic stress, anxiety or depression – will require some kind of psychological treatment, especially if they persist over time. But it's easy to underestimate the impact of direct physical interventions on psychological problems.

Partly, of course, this is because the whole separation of mind and body is an artificial one – your mind is the product of your brain; hormones play a key role in regulating your moods; psychological problems such as stress and anxiety have a whole range of physiological symptoms... In reality, your mind and body are inextricably linked, with an exquisitely complex feedback system between the two.

So it should come as no surprise that regular physical exercise is key to good mental health. Think of exercise in two main areas: cardiovascular and relaxing. Cardio exercise such as cycling, dancing, racquet sports, football, brisk walking or swimming, weight training or martial arts burns off hormones such as adrenaline and cortisol that are produced when we are anxious or stressed.

Just 20 minutes of moderate exercise gives you a shot of endorphins, which help you feel happy and calm; and regular cardio exercise is proven to be just as effective as antidepressants for mild to moderate depression (and with no nasty side effects).

Stress-relieving exercise

Relaxing exercise includes yoga, tai chi, gentle swimming or slow walking and is an excellent stress-reliever, especially if you do it in a green space, such as your local park. This kind of exercise activates the relaxation response, which balances out the stress response and helps you feel calmer and more relaxed. If you are suffering from depression, you may lack the energy to do more vigorous exercise, but it's really important to do something even if it's just a walk round the block.

So if you're stressed out, struggling with an anxiety problem or depressed, remember that exercise will really help – and if the problem is short-term, it may be all you need to regain your equilibrium and feel better, so why not give it a try?

Warm wishes,

Dan