the.com/macronutrient
The big three your body burns by the gram, not the milligram.
means A nutrient — protein, carbohydrate, or fat — that the body needs in large amounts for energy and structure.
from From Greek makros, large, plus nutrient — coined to contrast with vitamins and minerals, the micros you need in mere traces.
The trioProtein, carbs, and fat; some count alcohol too.
Energy densityFat packs nine calories per gram, doubling the rest.
Water debateNeeded in bulk, but gives zero calories.