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Standing all day is as bad as sitting all day. The benefit comes from alternating — 30-45 minutes standing, 30-45 sitting, repeated. Quality adjustable desks (Uplift V2, Fully Jarvis) make the switch easy. Anti-fatigue mats matter; standing on hardwood for hours hurts knees and feet.

Seated: elbows at 90° when typing, with feet flat on the floor — typically 28-30 inches for most adults. Standing: elbows still at 90° with shoulders relaxed — typically chest height. Adjustable desks let you switch; fixed desks should be ordered to your specific elbow height with a chair you can adjust.

L-shaped (Tribesigns, Bestar) gives much more surface area for dual-monitor setups and side projects. Straight desks (Fully Jarvis, IKEA Bekant) fit any room layout, easier to move. L-desks need a corner location and don't work well as standing desks (the corner doesn't lift evenly). Most pro setups use L-desks.

Dual-motor lift system. Single-motor desks wobble at full extension, can't handle heavy monitor setups, and fail earlier. Look for 250-lb+ lift capacity, 25-50 inch height range, and at least 4 programmable height memories. Uplift V2 and Fully Jarvis are the consensus best dual-motor picks.

Yes — monitor arms (Ergotron LX, Vivo) free up desk surface, let you adjust height for ergonomics, and look dramatically cleaner. Most monitors come with a stand that's the wrong height for proper neck position. The Ergotron LX ($210) is the lifetime buy; cheaper Vivo arms ($60) work fine for monitors under 24 inches.