Frame size refers to the dimensions of a person's body, particularly the skeletal structure. It is often categorized as small, medium, or large based on measurements such as wrist circumference and shoulder width. Understanding frame size can help individuals determine appropriate clothing sizes and assess their overall health. In the context of fitness and health, frame size can influence body composition and metabolism. For example, individuals with a larger frame may naturally carry more muscle mass, while those with a smaller frame may have a different distribution of body fat. This information can be useful for tailoring diet and exercise plans.