What is the ideal sit-stand ratio?

There is no single perfect ratio, but most ergonomic experts recommend alternating every 30–60 minutes. A commonly suggested guideline is a 1:1 or 2:1 sit-to-stand ratio, meaning 30 minutes sitting followed by 30 minutes standing, or 60 minutes sitting and 30 minutes standing. The key is frequent posture changes rather than long static periods. Movement matters more than strict timing.