What is stretching? Stretching can be defined as the deliberate lengthening of muscles so as to increase muscle flexibility and joint movement. Stretching is an important activity as it helps to relax the body after any workout activity. Stretching also helps to decrease the risk of getting injured when you are engaging in any exercise activities. One of the major benefits of stretching after your workout is that it helps to improve flexibility. Flexibility helps to improve the movement of your joints so they can move through their full range of motion; this may help to improve your overall performance in physical activities.