Here are a few options for a WordPress post_tag description in Traditional Chinese, depending on the desired tone and target audience:

**Option 1: Simple and Direct**

* **Title:** 運動不足 (Yùndòng bùzú) – Lack of Exercise
* **Description:** 討論與缺乏運動相關的文章。 (Tǎolùn yǔ quēfá yùndòng xiāngguān de wénzhāng.) – Articles discussing topics related to lack of exercise.

**Option 2: Focusing on Solutions**

* **Title:** 運動不足 (Yùndòng bùzú) – Lack of Exercise
* **Description:** 分析久坐、缺乏運動對健康的影響，以及如何改善和增加運動量。 (Fēnxī jiǔzuò, quēfá yùndòng duì jiànkāng de yǐngxiǎng, yǐjí rúhé gǎishàn hé zēngjiā yùndòngliàng.) – Analyzing the impacts of prolonged sitting and lack of exercise on health, along with how to improve and increase physical activity.

**Option 3: More Encouraging**

* **Title:** 運動不足 (Yùndòng bùzú) – Lack of Exercise
* **Description:** 關心健康？探討運動對身心的好處，分享如何在忙碌生活中找到時間運動。 (Guānxīn jiànkāng? Tàn tǎo yùndòng duì shēnxīn de hǎochù, fēnxiǎng rúhé zài mánglù shēnghuó zhōng zhǎodào shíjiān yùndòng.) – Concerned about your health? Explore the benefits of exercise for mind and body, sharing how to find time for exercise in a busy life.

**Option 4: For a Health-Conscious audience**

* **Title:** 運動不足 (Yùndòng bùzú) – Lack of Exercise
* **Description:** 探討久坐生活方式的危害，並提供關於如何克服運動不足，促進整體健康和福祉的見解。 (Tàntǎo jiǔzuò shēnghuófāngshì de wēihài, bìng tígōng guānyú rúhé kèfú yùndòng bùzú, cùjìn zhěngtǐ jiànkāng hé wēifú de jiànjiě。) – Exploring the dangers of a sedentary lifestyle, and providing insights on how to overcome a lack of exercise, and promote overall health and well-being.

**Key Considerations When Choosing:**

* **Your Website’s Tone:** Are you generally friendly and encouraging, or more serious and informational?
* **Your Audience:** Who are you writing for? Are they already health-conscious, or do they need more gentle persuasion?
* **The Content of Your Posts:** What topics do you usually cover under this tag? Make sure the description accurately reflects those topics.

Choose the description that best fits your needs! Remember that you can always adjust it later.