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The first step to tracking your macros in MyFitnessPal is setting up your specific nutrition goals so that they’re easier to track. This tutorial and video walks you step by step through the process.

Step 4
Make adjustments to this wheel to work towards getting the macro numbers to reflect what you want them to be.
Note The free version of MyFitnessPal does not allow you to add in specific grams that you want. Many people make adjustments to get MFP to be as close as possible to their goal macros and make a note of any discrepancies.