Eat More Than You Burn
Step number one to gaining weight is making sure you start eating more. Eat more? Oh, I think we can do that.
"It might sound obvious, but if your goal is gaining weight, you have to eat more calories than your body burns," Konforti told POPSUGAR. "Calories in vs. calories out is the biggest factor for weight change. There's no way around eating more, and what you might think is a lot of food may not be. Research has shown that without logging nutrition, we're pretty bad at guessing how much we eat. So chances are, if you think you're eating a lot but you're still not gaining weight, you need to track your calories for at least a week."