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An important component of a stretching routine to improve flexibility is both frequency and duration. Frequency refers to how often stretching exercises are performed, while duration pertains to the length of time each stretch is held. Incorporating both elements is crucial because flexibility improvements generally come with regular, consistent practice over time.

When stretching is done frequently, the muscles and connective tissues have repeated opportunities to adapt and elongate, which can enhance the range of motion. Additionally, holding stretches for a sufficient duration allows the body’s soft tissues (muscles, tendons, and fascia) to relax and lengthen, promoting better flexibility.

While speed may play a role in how stretches are performed (e.g., dynamic vs. static stretching), it is not a primary component for improving flexibility compared to the consistent practice represented by frequency and the time spent holding each stretch. Therefore, a well-rounded approach that emphasizes both frequency and duration supports optimal flexibility gains.