Have you ever heard of the mind/muscle connection? Generally speaking, this is the process of focusing on, and visualizing, the muscle group you are working as you actually do. For example, if you are doing a set of bicep curls, you would focus on your biceps getting as good a workout as possible and, as best you can, visualizing the muscle working and growing.

The same way this mental connection helps build muscle, it also helps prevent injuries. This is because the visualization process is basically the same; intently focusing on your muscles as you work them will help ensure that you are sticking to proper form.

Most exercise-related injuries occur when attempts are made to lift unmanageable amounts of weight and/or when proper form is all but forgotten. Homing in on these areas of your body as they are being worked will reduce the likelihood that you'll abandon correct form and, consequently, lower your risk of injury at the same time.

Source