Well, “macro” is short for macronutrient. What's a macronutrient? They're the three categories of nutrients you eat the most and provide you with most of your energy: protein, carbohydrates and fats. So when you're counting your macros, you're counting the grams of proteins, carbs or fat that you're consuming.

Macro counting helps you understand where those calories are coming from and how they affect your body. It also helps you understand that not all calories are created equal.

you're counting macros for weight loss, you'll want to make sure you're counting macros in such a way that you're also cutting calories. Try this range of macro ratio for weight loss: 10-30% carbs, 40-50% protein, 30-40% fat.