During extended screen work, do not forget:
1. Drink enough to support concentration and circulation.
2. Blink regularly to prevent your eyes from drying out.
3. Periodically shift your focus to a distant point to relax the eye muscles.
4. Air out the room to ensure a supply of fresh air.
5. Stretch or stand up briefly to reduce muscle tension.
6. Sit upright and maintain a stable posture for your back.
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