Macros 101: How Carbs, Protein & Fat Affect Your Body and Metabolism

What are macros and why do they matter? In this video, I break down carbohydrates, protein, and fat using evidence-based nutrition guidelines to help you fuel your body, support metabolism, and improve long-term health.
Macronutrients (macros) are the nutrients your body needs in large amounts to function properly. Understanding how carbohydrates, protein, and fat work — and how to balance them — is key for energy levels, muscle maintenance, metabolic health, and cardiovascular health.
In this video, you’ll learn:
What macros are and why they matter


The difference between macros vs micronutrients


Evidence-based macro distribution ranges (AMDR)


How to set up your macros using calories


Why complex carbohydrates provide better energy


The difference between unsaturated vs saturated fats


How macro balance impacts metabolism, muscle, and heart health


I also explain:
Why carbs are your body’s primary energy source


How protein supports muscle and satiety


Why unsaturated fats are preferred for heart health


How macro balance supports sustainable nutrition — not restriction


Science-based references discussed:
Institute of Medicine (AMDR ranges – Journal of Nutrition)


Mozaffarian et al., 2010 (New England Journal of Medicine)


This video is perfect if you’re:
New to tracking macros


Using MyFitnessPal or another food tracker


Focused on fat loss, muscle maintenance, or metabolic health


Looking for clear, evidence-based nutrition education


Remember: The goal is balance — quality matters as much as quantity.
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