In the context of physical fitness, how is "balance" defined?

Balance is defined as the ability to maintain the body's center of mass over its base of support. This definition encompasses the concept that balance involves stabilizing the body in various positions, whether still or in motion. It is crucial for performing a wide range of activities, from standing still to executing complex movements in sports. Having good balance enables individuals to coordinate their movements effectively while mitigating the risk of falls or injury.

While other options mention related concepts, they do not capture the core principle of balance as thoroughly. For instance, performing various exercises may involve balance, but it does not encompass the broader definition related to maintaining stability. Achieving a stable posture during dynamic movements showcases the application of balance but does not articulate balance itself. Similarly, moving efficiently without falling relates to the outcomes of effective balance but does not define it in terms of maintaining the center of mass over a support base.