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Adjusting Macronutrients

Updated February 6, 2026

This content is for informational purposes only and is not a substitute for professional advice.

Adjusting macronutrients edits your plan targets directly, overriding the generated plan without rerunning plan calculation.

What you are editing

Fuel stores a daily plan as four targets: daily calories, protein grams, carbohydrate grams, and fat grams.

These values are used as the default targets in Today, widgets, and reviews. When they exist, they take precedence over the plan values that would be computed from your profile inputs.

What an override means in Fuel

An override is a direct write to the stored plan targets, followed by marking the plan as custom.

That design has one goal. It lets you change execution targets immediately without restarting onboarding, changing your demographic inputs, or waiting for a new generated plan.

Tap a target
Change the number
Save

Result
Plan targets are updated in place
Plan is marked as custom
Targets propagate across Today, reviews, and widgets

How to adjust targets

  1. Open You
  2. Open Adjust Macronutrients
  3. Tap Calories, Protein, Carbs, or Fat
  4. Use the stepper to change the target, then tap Done

Calories move in 10 kcal steps. Protein, carbs, and fat move in 5 g steps.

Where the override is applied

Fuel applies the stored plan targets as the day’s default constraints.

Today uses the stored daily calories as the calorie goal and uses the stored macro grams as macro targets. Daily and weekly reviews read the same targets when they summarize adherence and distance from plan.

When a plan is marked as custom, coaching context can surface the targets as plan overrides so you can distinguish between the generated recommendation and the targets you chose to run.

Restoring the generated plan

When your plan is custom, Fuel shows a Use Coach Plan action.

Use Coach Plan rewrites your stored targets back to the generated recommendation and clears the custom flag. It also resets the plan timeline fields to treat the restored plan as a fresh start for progress tracking.

When to generate a new plan

Manual adjustments change targets. Plan generation changes the model that produced the targets.

Use Update Daily Plan when you want Fuel to recompute calories and macro distribution from your profile inputs such as goal type, diet preference, activity level, and speed. That flow creates a new generated plan and updates the plan timeline start.

Keeping targets internally consistent

Fuel treats calories and macro grams as independent constraints.

Protein, carbohydrate, and fat targets can imply a calorie total that differs from your daily calories target. Decide which constraint is primary for the next week, then adjust the others to match that intent.

  1. Hold calories fixed when you want a stable deficit or surplus and you are only changing macro distribution
  2. Hold protein fixed when recovery and satiety are the limiting variables, then move carbs and fat inside the calorie budget
  3. Hold carbs fixed on training blocks where performance depends on glycogen availability, then allocate the remaining calories across protein and fat

Use Energy Balance and your weight trend to validate the change over one to two weeks, since a target is only useful when it produces a predictable outcome.

Related

Nutrition Planning

Nutrition planning in Fuel turns a set of targets into decisions you can execute, using Apple Watch energy context and your recent trend to keep the plan aligned with reality.

Energy Balance

Energy balance ties intake and energy spend into one view so you can see whether your targets match what your watch and logs describe.

Personalized Metrics

Personalized metrics are the signals Fuel derives from Apple Watch energy, weigh-ins, and your nutrition log so targets stay grounded and reviews stay specific.