How Many Calories Should You Eat Per Day? Understanding how many calories you should eat per day is one of the most important steps toward achieving your health and fitness goals. Whether you want to lose weight, gain muscle, or maintain your current physique, your daily calorie intake plays a crucial role. In this guide, we’ll break down everything you need to know in simple terms so you can calculate your calorie needs and make smarter food choices. What Are Calories? Calories are units of energy that your body uses to perform daily functions such as breathing, digestion, and physical activity. Every food you eat provides calories, which fuel your body throughout the day. If you consume more calories than your body needs, the excess is stored as fat. If you consume fewer calories, your body uses stored fat for energy, leading to weight loss. Average Daily Calorie Needs While calorie needs vary fr...