What causes "wrist fatigue" in typists, and how can it be prevented?

Wrist fatigue in typists is primarily caused by discomfort that arises from improper wrist positioning during typing. When the wrists are not aligned properly—such as being bent upward or downward—it puts strain on the tendons and muscles, leading to fatigue and discomfort over time. This is often exacerbated by extended periods of typing without breaks.

To prevent wrist fatigue, it is essential to maintain a neutral wrist alignment. This means keeping the wrists straight and level with the keyboard, avoiding excessive angles that can lead to strain. Proper ergonomic practices, such as adjusting the height of the chair or keyboard, can help achieve this alignment. Additionally, using wrist rests can provide support when typing, further reducing the risk of discomfort. Regular breaks where typists stretch their hands and wrists can also significantly alleviate the potential for fatigue.

While other options mention overuse, excessive tension, and poor lighting, these factors do not directly address the specific concern of wrist positioning, which is the root cause of wrist fatigue.