“Hanging Back” is an extremely common characteristic among poor ball strikers. hanging back refers to the body “Backing up” away from the target as the club approaches impact. This can be seen in the images below demonstrated by Dave Philips of TPI (The Titleist Performance Institute).
This type of impact can often result in poor contact (heavy or thin strikes) and an unstable club face which can result in a wide dispersion of golf shots. If hanging back is an issue that you suffer with here is a great drill: