翻译一篇英文文章
文章：The importance of exercise for mental health
Mental health is an integral part of our overall wellbeing, and exercise has been shown to have a positive impact on mental health. Regular exercise can reduce symptoms of depression and anxiety, help manage stress, and improve cognitive function. It can also improve self-esteem and body image, leading to a more positive outlook on life. In addition, exercise has been shown to have a protective effect against certain mental health disorders, such as dementia and Alzheimer's disease.
文章：锻炼对心理健康的重要性
心理健康是我们整体健康的一个重要组成部分，而锻炼已经被证明对心理健康有积极影响。定期锻炼可以减轻抑郁和焦虑症状，帮助管理压力，并改善认知功能。它还可以提高自尊心和身体形象，带来更积极的人生态度。此外，锻炼还被证明对某些心理健康疾病具有保护作用，如痴呆症和阿尔茨海默症。