Final answer:
The optimal height of a standing desk for heavy work depends on an individual's height and posture, but it is generally recommended to position the desk at elbow height or slightly below to ensure proper alignment of the body.
Step-by-step explanation:
When considering the height of a standing desk for heavy work, it is important to ensure that it is ergonomically suitable for the individual using it. The optimal height of a standing desk can vary depending on a person's height and posture. However, a general guideline is to position the desk at elbow height or slightly below. This allows for proper alignment of the wrists, shoulders, and neck, reducing strain on these areas.