Swimming's a highly effective and safe form of exercise.

The water supports up to 90% of your body weight so you're less likely to have injuries while toning those muscles! And because the water is much denser than air, you have to work harder than you would on land, so you burn more calories in a pool. As well as helping to keep your weight under control, regular swimming can improve your mood, offer opportunities for socialising and reduce the risk of chronic illnesses such as heart disease, type 2 diabetes and stroke. In short, live a healthier, happier, longer life.

Swimming forms a component of many GP referral schemes, which link together primary health care and leisure providers. GPs give patients a 'prescription' to attend sessions at their local leisure centre as a means to of treatment, helping them live with their long-term condition or improving their general health.

• Encouraging people to get regular exercise is an important step in tackling the increasing levels of obesity amongst every age group in Wales. Not only is swimming ideal exercise but it's also free for those aged 16 and under or 60 and over. Find out about free swimming

• If you enjoy being in the pool, perhaps you should consider joining a club to improve your technique and experience the thrill of competitive swimming.