“Mirror muscles” are the muscles you see when you flex in front of a mirror. They consist of biceps, triceps, shoulders, chest and abs. Most lifters spend too much time working these muscles because they are the first thing people notice when you enter the room. After all, who doesn’t want a bigger chest, larger biceps and broader shoulders? However, because these muscles are the most noticeable, people focus on them 2-3 times a week while neglecting other important muscle groups such as upper back, lower back, quads and hamstrings.
Injuries can be easily caused by overtraining mirror muscles. Shoulder, back and knee injuries seem to be pretty common. Preventing such injuries is simple: create a more balanced approach to your workout. A good rule of thumb to follow would be to always do an equal amount of sets and repetitions for the front of the body as well as the back. Target your weakness by working them early in the week – when you are fresh and energetic. Don’t fall into the trap of only working the muscles that people see right away. You will end up bigger, stronger and more well-balanced by training your body equally.