在大学生活中，写作能力是衡量学生综合素质的重要标准之一。尤其是英语四级考试中的作文部分，不仅考察学生的语言表达能力，还涉及到逻辑思维和观点阐述的水平。为了帮助考生更好地备考，以下是一篇针对“2017年12月英语四级作文”的原创范文，内容贴近现实，结构清晰，语言流畅，适合用于练习与参考。

题目：The Importance of Building a Healthy Lifestyle

范文：

In recent years, with the rapid development of society and the increasing pressure of life, more and more people have begun to pay attention to their health. A healthy lifestyle is no longer just a personal choice, but a necessary way of living for everyone.

First of all, a healthy lifestyle can improve our physical condition. Regular exercise, balanced diet, and sufficient sleep are the basic elements that contribute to good health. By maintaining these habits, we can prevent many diseases and reduce the risk of getting sick.

Secondly, it also helps to enhance mental well-being. Many students today suffer from stress and anxiety due to academic pressure. However, by engaging in activities such as reading, meditating, or even taking a walk, we can relieve our minds and stay positive.

Moreover, a healthy lifestyle can lead to better productivity. When we feel energetic and focused, we can work more efficiently and achieve greater success in our studies and careers.

In conclusion, building a healthy lifestyle is of great importance. It not only benefits our body but also improves our mental state and overall performance. Therefore, it's high time that we take action and make small changes in our daily lives to live healthier and happier.

写作思路解析：

1. 开头引入主题：通过社会背景引出健康生活方式的重要性。

2. 分点论述：从身体健康、心理健康和工作效率三个方面展开，逻辑清晰。

3. 结尾总结：强调健康生活的重要性，并呼吁行动。

这篇范文结构完整，用词准确，符合四级作文评分标准。建议考生在备考时多积累相关话题词汇和句型，同时注重段落之间的衔接与过渡，提升整体表达能力。