What aspect of posture should be maintained to prevent strain?

Maintaining a vertical alignment of the body is essential to prevent strain. Proper posture involves keeping the spine straight and the body balanced, which minimizes undue stress on muscles, ligaments, and joints. When the body is aligned vertically, it allows for an even distribution of weight, reducing the likelihood of fatigue and injury.

This alignment helps to maintain the natural curves of the spine and supports optimal positioning for the head, shoulders, arms, and legs. When one part of the body is misaligned, such as by elevating the arms or twisting the spine, it can lead to muscle strain and discomfort. Therefore, practicing vertical body alignment is crucial for ergonomic safety and overall physical well-being in the workplace.