The first signs of a poor desk setup usually appear in the neck, shoulders, wrists, lower back, and legs. Common physical problems from wrong desk height include shoulder tension, wrist discomfort, and lower back strain. If the desk is too high, you may shrug your shoulders or bend your wrists upward. If it is too low, you may lean forward or sit awkwardly. A good desk height keeps your elbows near 90 degrees, wrists neutral, feet flat, and shoulders relaxed. Small adjustments can make work much more comfortable.