Which method is commonly used for flexibility training?

Static stretching is a method predominantly used for flexibility training because it involves lengthening the muscles in a controlled and deliberate manner. This technique entails holding a stretch for a specific period, typically between 15 to 60 seconds, to allow the muscle fibers to relax and elongate. By doing so, static stretching helps to increase the range of motion around a joint and improve overall flexibility.

In contrast, dynamic stretching involves moving parts of your body through a range of motion, which is more applicable to warm-ups before activities rather than targeted flexibility training. Plyometric training focuses on explosive movements and power development, not flexibility. Interval training alternates between high-intensity exercises and rest or lower-intensity periods, primarily designed for cardiovascular fitness, not flexibility. Therefore, static stretching is identified as the most effective method for enhancing flexibility among these options.