What deficit or surplus suits a lean bulk?
Roughly 20% below TDEE for fat-loss goals, 10% above for lean bulks, neutral for recomposition or maintenance. The calculator picks a sensible default within those windows.
Macro Calculator a lean bulk
Macros are not goal-agnostic. The right calorie position and protein band for a lean bulk look different from maintenance — and the wrong split is the most common reason lean bulk goals stall before they should. This page sets the calorie target and macro split that the research supports for a lean bulk, with a sensible per-meal frame.
Calorie position for lean bulk
a lean bulk works best at a specific calorie position: roughly 15–25% below TDEE for cutting, neutral for maintenance and recomposition, 5–15% above TDEE for lean bulks. The calculator picks the middle of that window so the plan is honest about pace without being aggressive.
Pushing the deficit harder rarely accelerates a lean bulk — it just costs adherence and lean mass. Smaller, sustained positions outperform extreme swings.
Protein, carbs and fat for lean bulk
Protein anchors at 1.8–2.2 g/kg during a lean bulk because the metabolic context (deficit or surplus) raises the cost of holding or building lean mass. Fat sits at 25–30% of total calories to protect hormones and palatability. Carbs fill the remainder and fuel training.
Do not crash any single macro. a lean bulk that comes from a fat- or carb-zero plan almost always reverses inside three months.
How AJYX runs a lean bulk
Inside AJYX, the macros adapt automatically: as weight trends respond, the app rebalances the deficit or surplus before progress plateaus. lean bulk get a single, current plan rather than a static spreadsheet.
Use this page as the standalone read. Move into the app for the running version that keeps a lean bulk moving.
FAQ
Why is protein so high for a lean bulk?
a lean bulk either creates a deficit or supports new tissue; both raise protein demand. Sitting at 1.8–2.2 g/kg protects lean mass and recovery.
Can I shift carbs and fats around for a lean bulk?
Yes, within ±5% of calories on either macro is fine. Keep protein steady and only tweak carbs/fats based on training response and personal preference.