What is a characteristic of good body mechanics when lifting?

Bending the knees when lifting is a fundamental principle of good body mechanics. This technique helps to utilize the strength of the legs, which are typically much stronger than the back. By bending at the knees, you lower your center of gravity and maintain better balance and stability, reducing the risk of injury to the back and spine. This practice minimizes strain on the lower back muscles, which can be particularly vulnerable when lifting heavy objects.

Additionally, maintaining proper body alignment is important when lifting. Keeping the back straight is an extension of this principle, as it promotes a neutral spine position. This alignment further reduces the risk of injury. However, bending the knees while lifting specifically supports the muscular strength and mechanics necessary for lifting effectively and safely.