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Understanding Macronutrients

Master protein, carbohydrate, and dietary fat ratios to optimize metabolic energy, hormonal balance, and body composition.

TL;DR

  1. Consume adequate daily proteinIntake to preserve metabolic lean muscle mass.
  2. Select complex unrefinedCarbs rich in dietary fiber to sustain steady blood glucose levels.
  3. Incorporate essential dietaryLipids to synthesize steroid hormones and absorb fat-soluble vitamins.
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The Big Three Energy Substrates

    Dietary Protein

    Provide amino acids and organic nitrogen for tissue repair, immune synthesis, and enzyme generation.

    Protein Energy = 4 kcal per gram
Target = 1.6g to 2.2g per kg body mass
    Dietary Carbohydrates

    Serve as the primary rapid oxidative substrate for central nervous system and high-intensity glycolytic exercise.

    Carb Energy = 4 kcal per gram
Stored as liver and muscle glycogen
    Dietary Lipids

    Provide dense energy storage, form phospholipid cell membranes, and serve as precursors for steroid hormones.

    Fat Energy = 9 kcal per gram
Minimum Threshold = 0.7g per kg body mass
    Thermic Effect Comparison

    Factor metabolic energy expended during digestion: 20-30% for protein, 5-10% for carbs, 0-3% for fats.

    Tef
Protein = 20-30%
Carbs = 5-10%
Fats = 0-3%

Carbohydrate Classification

    Simple Monosaccharides

    Absorb rapidly across intestinal enterocytes, prompting swift postprandial glucose and insulin surges.

    Simple Carbs = glucose, fructose, sucrose
Best timed immediately around training
    Complex Starches

    Comprise long amylose and amylopectin polysaccharide chains requiring enzymatic cleavage for sustained energy.

    Complex Sources
oats, quinoa, sweet_potatoes
Yields gradual glucose release into blood
    Non-Digestible Fiber

    Pass into the large intestine intact to feed commensal microbiota and slow gastric transit times.

    Fiber Target = 28g to 38g daily intake
Lowers circulating LDL cholesterol levels
    Glycemic Load Metric

    Assess total carbohydrate quantity combined with glycemic speed to predict actual blood glucose excursion.

    Glycemic Load = (GI * availableCarbsGrams) / 100
Superior predictor over simple Glycemic Index

Dietary Fat Architecture

    Monounsaturated Fats

    Contain a single double bond; exceptionally stable against peroxidation and highly cardioprotective.

    MUFA Sources
olive_oil, avocados, macadamias
Enhances arterial endothelial function
    Polyunsaturated Fats

    Contain multiple double bonds; include essential omega-3 alpha-linolenic and omega-6 linoleic fatty acids.

    PUFA Balance = target 4:1 omega6 to omega3
Essential for membrane fluidity and signaling
    Saturated Lipids

    Contain no double bonds; maintain membrane rigidity and support steroid hormone precursor pools.

    Sat Fat Limit = < 10% total daily caloric intake
Modulates LDL receptor clearance dynamics
    Essential Fatty Acids

    Supply fatty acids that human metabolic pathways cannot synthesize from de novo substrates.

    Essential Fats = ALA omega3, LA omega6
Must be supplied directly through diet

Macro Calculation Blueprint

    Step 1: Set Protein

    Lock in foundational protein intake based on total lean body mass and athletic training volume.

    Protein Grams = bodyWeightKg * 2.0
Protein Kcal = proteinGrams * 4
    Step 2: Allocate Fats

    Designate healthy dietary fats to satisfy essential fatty acid requirements and hormonal synthesis.

    Fat Kcal = totalDailyKcal * 0.25
Fat Grams = fatKcal / 9
    Step 3: Allocate Carbs

    Fill the remaining energy balance with unrefined carbohydrates to fuel muscular activity and brain metabolism.

    Used Kcal = proteinKcal + fatKcal
Carb Kcal = totalDailyKcal - usedKcal
Carb Grams = carbKcal / 4

Tips

  1. Track macronutrient gram weights rather than vague percentage ratios to guarantee adequate absolute proteinGrams regardless of total calories.
  2. Distribute daily carbohydrate intake around demanding exerciseWindows to maximize muscular glycogen replenishment and minimize fat storage.

Warnings

  1. Severely restricting dietary essentialFats below fifteen percent of total calories impairs reproductive hormone and testosterone synthesis.
  2. Consuming large quantities of refined highFructose sugars triggers rapid hepatic de novo lipogenesis and systemic insulin resistance.

In Practice

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