MASSIVE is a fully customized mass‑gaining diet plan built around carb cycling—strategically rotating carbohydrates to drive muscle growth while keeping body fat in check. Designed by coach Justin Harris, this Excel spreadsheet calculates your macronutrient amounts based on the lean body mass you input, so every number is tailored to your body and your goal: gaining as much quality size as possible.
This isn't a generic bulking template. You get a dynamic spreadsheet with individualized macros, a complete meal plan, and a list of multiple food sources so you have flexibility with what you eat. As your weight and body composition change, the program adjusts with you—just update your lean body mass and the plan recalculates automatically.
What You Get
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Customized carb cycling mass‑gain diet plan in Excel spreadsheet format
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Macronutrient calculations based on your individual lean body mass
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Full meal plan with multiple food source options for flexibility
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Auto‑adjusting formulas that update as your weight and body composition change
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Designed to maximize muscle gain while managing body fat
Who This Is For
Serious lifters, off‑season competitors, and anyone who wants a structured, individualized approach to putting on size—not a "just eat more" plan.
