A possible version:

Nowadays, sports are becoming more and more popular. As the saying goes, "Life lies in exercise". Doing exercise every day helps us keep healthy and energetic. Therefore, men, women and children are actively doing sports. They can do sports anywhere, such as parks, communities and gyms, where we can see them exercising.

There are many kinds of sports, such as yoga, running, swimming, Tai Chi and ball games. Now I have to do so much homework after school that I have no time to take part in sports activities. Therefore, I choose to run or walk on my way home from school. In this way, I can save study time and do sports.

Test analysis:

This is a material composition, which introduces the importance of national fitness exercise, the types of exercise and the exercise that suits you. It can be seen from the materials given that this paper mainly examines the simple present tense, the singular person first and the singular person third, and pays attention to the consistency of subject and predicate. The sentence structure is mainly verb-object structure, and pay attention to the application of some common sentence patterns, such as: they can do ..., I choose to run ..., I have no time ... and pay attention to the use of pronouns and the alternate use of various sentence patterns in writing. Pay attention to the narrative order and logical relationship when writing, and pay attention to expressing the reasons for choosing exercises that suit you after writing.

The highlights show that the structure of this paper is compact and the language is concise. Firstly, it introduces the positioning and importance of the national fitness exercise, then introduces the types of the national fitness exercise, and finally points out the suitable exercise mode. The use of phrases such as staying healthy and taking part in it also adds a lot of color to the article here.