You're Not Eating a Well-Rounded Diet
In order to see muscle gain, you need to be eating enough protein on the daily. Luiza Petre, MD, board-certified cardiologist and weight-loss specialist, told POPSUGAR, "The general rule is that it is necessary to eat at least one to 1.5 grams per pound of bodyweight per day."
Your diet plays a huge role in muscle gain, and there are a lot of things that can derail your goals, like overeating, consuming too many packaged foods, not eating enough protein, and not getting enough nutrients in general. Make sure you're eating a healthy, well-rounded diet that helps you consistently grow muscle.