What are the two types of stretches generally deemed dangerous?

The two types of stretches that are generally deemed dangerous are ballistic and isostatic stretching.

Ballistic stretching involves using momentum to force a body part beyond its normal range of motion. This form of stretching can lead to muscle strains or injuries because it does not allow the muscles to relax; instead, it puts them under tension rapidly. This can be especially risky for individuals who are not adequately warmed up or possess a limited range of motion, as the quick movements can lead to overstretching.

Isostatic stretching, on the other hand, often involves a partner and includes extending a muscle to its limit, holding it there, and then pushing it further. This form of stretching can also be risky because it relies on external force to push the muscle beyond its normal range, which could lead to muscle tears or injuries if not executed with proper technique and care.

Understanding why these types of stretches can be dangerous highlights the importance of choosing safer and more controlled methods, such as static or dynamic stretching, especially when preparing for physical activity.