Stretching range of motion and comfort
Stretching is one way people work on range of motion. Its role depends on the activity and person; it should not be presented as a universal injury-prevention method. Comfortable movement and useful function are better goals than forcing a particular position.
A warm-up can involve gradual movements relevant to the activity that follows. Choose a level appropriate to your current ability and circumstances. If pain or an injury affects movement, obtain guidance rather than assuming a standard sequence will fit.
Static stretching involves remaining in a position rather than moving continuously. Timing and suitability depend on the aim and activity. A general article need not prescribe a hold duration or encourage moving into pain to make the practice count.
Specialized stretching methods should be matched to a meaningful goal and taught with appropriate guidance. More intense or complicated methods are not automatically more useful. A person should understand the aim and be able to stop if the movement is uncomfortable.
Range of motion is one aspect of movement, alongside strength, balance, skill, and the demands of a task. A flexible person can still be injured, and limited flexibility is not a complete explanation for pain. Avoid making one measure a verdict on physical health.
Questions to apply to this idea
Strength work can be part of a broader plan to improve function. The appropriate exercises depend on the task and person; a label such as weak or imbalanced does not identify the cause of every symptom. Rehabilitation after injury requires a tailored assessment.