What are the benefits of an isometric exercise like a plank?

An isometric exercise, such as the plank, effectively strengthens muscles without any movement of the joint. During an isometric contraction, the muscle generates force while maintaining a static position, which means there is no lengthening or shortening of the muscle fibers. This type of exercise is particularly beneficial for developing stability and strength in various muscle groups, especially the core muscles, which are engaged during the plank to maintain proper form.

Planks can enhance muscle engagement and promote endurance in those specific muscle groups since they require sustained effort over time. While the other options detail various beneficial aspects of different types of exercises, they do not apply to isometric exercises in the same context. Flexibility typically requires dynamic movements or stretches, while cardiovascular fitness is primarily improved through activities that get the heart rate up, such as aerobic exercises.