Food fuels our bodies by providing the right amount of energy in the form of calories required for performing daily activities. Studies have shown that calories not only govern our body's metabolic processes but also play a pivotal role in maintaining a healthy Body Mass Index (BMI). For individuals with high metabolic rates or those engaging in vigorous physical activities like preparing for the NDA (National Defence Academy) exams, eating the right amount of calories are essential to sustain intense study sessions, physical training, and overall well-being. Here are some important tips for defense aspirants to promote healthy weight gain. Healthy Foods to Gain Weight Fast for NDA Physical Fitness Exam 1. Milk Milk is an excellent source of protein, calcium, fats, minerals and vitamins. These essential components are needed by your body while performing challenging tasks during the NDA training regime. By drinking a cup of milk one can gain 152 calories; further aiding in ga