给出一篇英文文章，让GPT模型对其进行摘要并返回一个500个字符左右的摘要。
文章: "The benefits of exercise are well-known – it can help you maintain a healthy weight, reduce your risk of chronic diseases such as diabetes and heart disease, and improve your mental health. But new research has found that exercise can also affect your gut microbiome – the trillions of bacteria and other microbes that live in your digestive system – in ways that could improve your overall health."
Regular exercise may positively impact the gut microbiome, which could lead to overall health improvements. These microbes live in the digestive system and their proliferation can be affected by health habits. Exercise's impact on weight loss, diabetes and heart disease prevention is already acknowledged, but this research has identified a new connection between exercise and a healthy gut.