Simply put, to gain weight, one needs to eat more food but in order to gain health weight, one needs to balance the process. A large number of individuals find it hard to put on weight because of high metabolic rate, lack of appetite or schedule. Nevertheless, through the proper diet, workouts, and practices, one can actually noticeably lose weight in a month, but it will be lean, not fat. 1. Understand Your Body Needs The first step to gaining weight is understanding your caloric requirement. Your body needs a certain number of calories daily to maintain your current weight (called “maintenance calories”). To gain weight, you must eat more than you burn—ideally 300–500 extra calories per day for slow gain, or 700–1,000 for faster results. You can use online calorie calculators to estimate your needs based on your age, height, weight, and activity level. 2. Eat Nutrient-Dense, High-Calorie Foods To gain healthy weight, you need foods that are rich in nutrients as well as calorie...