Flexibility is determined by the range of motion of a particular joint.
Static stretching, where you’re holding a stretch for 20-30 seconds, is the most popular way to work on flexibility. You can also work on this skill through more dynamic movements. This allows you to stretch at a moving motion. The goal is to slightly over extend your muscles to feel them lengthen apart.
Flexibility allows your muscles to improve your flexibility will increase your range of motion, reduces the risk of injury, improves posture, and the ability to move. Flexibility is what provides you the option to perform tasks with greater movement.