You Could be Depressed
Studies show a potential link between binge TV watching and depression. The word binge itself has negative connotations when it comes to your well being, and when it comes to your mental health, binging is not a good thing. In fact, a recent study found that “depression and binge-watching were very much connected: The more lonely and depressed the participants were, the more likely they were to devour giant chunks of TV programming. Subjects most often used this activity to avoid negative feelings, which is behavior also favored by binge-eaters and binge-drinkers.”

You May Gain Weight
It should come as no surprise that if you sit for hours on end, rather than doing any sort of physical activity, you will gain weight. In addition, we typically snack while we binge watch, and rarely do we reach for the carrots or a healthy, balanced meal if we get the munchies during a TV show marathon.