Why is there no single rule for exercise precautions for large-sized adults?

The reason why there is no single rule for exercise precautions for large-sized adults is that each individual has unique health profiles and fitness levels. Large individuals can vary widely in terms of overall health, physical condition, and fitness abilities. Some may be classified as "fat and fit," meaning they maintain a level of fitness that supports their cardiovascular and metabolic health, despite having a higher body weight. On the other hand, some larger individuals may have various health concerns that could affect their ability to exercise safely.

This variability necessitates an individualized approach to exercise programming and precautions, rather than a blanket rule that applies to all large individuals. It acknowledges that health is multifaceted and not solely determined by size. Thus, fitness professionals must evaluate each person on a case-by-case basis to ensure proper guidance and safety during exercise regimens.