Touch typing is a repetitive motor activity. If your hands, wrists, and posture are poorly aligned, typing for extended periods can cause discomfort, fatigue, and over time, serious conditions like Repetitive Strain Injury (RSI) or Carpal Tunnel Syndrome. Good typing speed is useless if you are in pain. Follow these five ergonomics principles to keep your hands healthy.
1. Maintain Neutral Wrist Alignment
The most common ergonomic mistake is typing with bent wrists. Your wrists should remain completely straight, in a neutral position relative to your forearms. Avoid two types of wrist deviation:
- Vertical bending (extension): Bending your wrists upward to reach keys. This usually happens if your keyboard is angled too high or flat on a low desk.
- Horizontal bending (ulnar deviation): Angling your wrists outward toward the pinky sides. This is common when using a compact keyboard that forces your hands together.
2. Keep Your Wrists Elevated (Hovering)
When typing, your wrists should hover slightly above the keyboard, rather than resting flat on a wrist rest, desk surface, or laptop deck. Think of your arms as pivot points, allowing your hands to glide smoothly across the layout. Wrist rests are designed for resting your palms *between* typing sessions, not during active input. Laying your wrists down places pressure on the carpal tunnel and limits your fingers' reach, forcing them to stretch awkwardly.
3. Position Your Keyboard Height Correctly
Your desk and chair heights dictate your typing posture. Adjust your chair so that when your fingers rest on the home row, your elbows form an angle of approximately 90 to 100 degrees. Your shoulders should remain fully relaxed, and your forearms should remain parallel to the floor. If your desk is too high, it forces you to lift your shoulders or rest your forearms on hard edges, reducing blood circulation.
4. The 20-20-20 Rule and Movement Breaks
No matter how ergonomic your setup is, the human body isn't designed to remain static for hours. Follow the 20-20-20 rule to rest your eyes, and combine it with hand movement breaks:
- Every 20 minutes: Look at an object at least 20 feet away for 20 seconds.
- Every 45 minutes: Stand up, stretch your shoulders, roll your wrists, and gently shake out your hands to promote circulation.
- Perform gentle finger stretches to stretch the flexor and extensor muscles in your forearms.
5. Consider Split or Ortholinear Keyboard Layouts
If you type for several hours a day and experience persistent wrist fatigue, standard flat keyboards might be the culprit. Consider upgrading to an ergonomic keyboard layout:
- Split keyboards: The keyboard is split into two halves, angled to match the natural straight path of your forearms, eliminating ulnar deviation.
- Tented keyboards: The halves are tilted slightly upward in the center (like a tent), allowing your hands to rest in a more natural handshake angle, reducing forearm pronation.
By investing in proper ergonomics, you ensure that typing remains a comfortable, sustainable, and productive tool for your daily work.