把这段文本用自己的话重新组织和简化，同时保持原意和逻辑。


原文：
According to a recent study by the World Health Organization, people who walk at least 30 minutes a day are at a lower risk of developing heart disease, stroke, and other health problems. The study also found that regular physical activity can improve mental health and reduce the risk of depression and cognitive decline.
最近的一项研究表明，每天步行至少30分钟的人患心脏病、中风和其他健康问题的风险更低。此外，研究还发现，经常进行体育锻炼可以改善心理健康，并减少抑郁和认知衰退的风险。