What Are Calories?

What Are Calories?

Calories are simply units of energy.

Just like your car needs fuel to run, your body needs energy to perform every function—from breathing and thinking to walking, exercising, and even sleeping. That energy comes from the food and drinks you consume, and we measure it in calories.

Your body uses calories to keep you alive and support all your daily activities. If you eat more calories than your body needs, the extra energy is stored, mostly as body fat. If you eat fewer calories than your body needs, your body uses stored energy to make up the difference, which can lead to fat loss over time.

In simple terms, calories aren't good or bad—they're just energy. The key is eating the right amount for your goals, whether that's improving your health, losing fat, building muscle, or maintaining your weight.