Sit-stand desks are ideal if you don't just work sitting down. You can easily adjust the seat height to a standing height and vice versa. You do this with the crank at the front of the desk. The minimum and maximum height differs per model. Make sure to check this before you buy a sit-stand desk. Your height determines the correct height. Alternating between sitting and standing working is good for ergonomics. This way, you reduce the risk of physical complaints.