原文：
Firstly, it is important to note that exercise has numerous health benefits. Exercise can help to reduce the risk of heart disease and stroke, as well as helping to maintain a healthy weight and preventing obesity. Additionally, regular exercise can help to improve mental health by reducing stress and anxiety, and boosting self-esteem and confidence.

用自己的话重新描述：
Engaging in physical activity on a regular basis can bring about a multitude of health benefits. For instance, it can lower the risk of heart disease and stroke, as well as help to control body weight and reduce the chances of becoming obese. Furthermore, exercise has been linked to improved mental health outcomes as it can help alleviate stress and anxiety while boosting feelings of self-worth and confidence.