Your body gets calories from 3 main nutrients called macros:
- Protein
- Fats
- Carbohydrates (Carbs)
Each macro provides a certain amount of energy (calories).
Calories Per Macro
- Protein = 4 calories per gram
- Carbohydrates = 4 calories per gram
- Fat = 9 calories per gram
Fat contains more than double the calories per gram compared to protein or carbs, which is why portion balance matters.
Protein: The Foundation
Protein helps support:
- Muscle maintenance
- Recovery
- Metabolism
- Hormone function
- Feeling full longer
A simple guideline:
Men
Aim for about 1 gram of protein per pound of optimal body weight
Example:
A man whose healthy goal weight is 180 lbs would aim for about:
180g protein daily
Women
Aim for about 0.8 grams of protein per pound of optimal body weight
Example:
A woman whose healthy goal weight is 150 lbs would aim for about:
120g protein daily
This is based on optimal or goal weight — not necessarily current weight.
Fat Intake
Healthy fats are important for:
- Hormone production
- Brain health
- Energy
- Skin and hair health
A simple target is:
About 30% of total daily calories from fats
Examples of healthy fats include:
- Avocados
- Olive oil
- Nuts and seeds
- Salmon
- Eggs
Because fat is calorie-dense, balance is important.
Carbohydrates
After protein and fats are set, the remaining calories usually come from carbohydrates.
Carbs help provide:
- Energy
- Exercise performance
- Brain function
- Fiber for digestion
Good carbohydrate sources include:
- Fruit
- Vegetables
- Rice
- Potatoes
- Oats
- Beans
- Whole grains
Simple Example
Woman with a goal weight of 150 lbs
Protein
150 × 0.8 = 120g protein
120g protein × 4 calories = 480 calories
Fats
If eating 2,000 calories daily:
30% from fats = 600 calories from fat
600 ÷ 9 = about 67g fat
Carbs
The remaining calories go toward carbohydrates.
2,000 total calories
- 480 protein calories
- 600 fat calories
= 920 calories left for carbs
920 ÷ 4 = 230g carbs
The Big Picture
Protein builds and repairs.
Fats support hormones and health.
Carbs fuel energy and performance.
The goal is not perfection — it is balance and consistency over time.
