parallelism

Sample sentence: I recommend relaxing activities such as reading, watching TV, seeing a movie.

Rewrite:
swimming and running.
Relaxing activities can help people to forget their worries, handle mental pressure, and lower their stress levels.
Many people like relaxing activities because they want to forget their stressful day and because they want to feel relaxed.

Why do we write using this technique?
Using parallelism improves writing style and readability, and makes sentences easier to process.