Macros Explained: How to Track Protein, Carbs and Fat for Your Goals

Macronutrients, or macros, are the three components of food that provide energy: protein, carbohydrates and fat. Tracking them is often presented as either essential precision or unnecessary obsession. Neither framing is accurate. Macros are a tool for translating a goal (build muscle, lose fat, maintain performance) into a concrete daily target, useful when applied loosely and consistently, and unhelpful when treated as a rule to hit exactly every single day.

This guide covers what each macro actually does, how to set targets for your goal, and how to track them in a way that supports training instead of adding a second job.

What each macro actually does

• Protein - the building material for muscle repair and growth. Covered in detail in how much protein you actually need , but the short version: 1.6-2.2g per kg of bodyweight per day covers most trained individuals.
• Carbohydrates - the primary fuel for moderate-to-high intensity training, stored as muscle glycogen. Carb intake has the largest direct effect on training performance session to session.
• Fat - essential for hormone production, including testosterone, and for absorbing fat-soluble vitamins. Chronically low fat intake (below roughly 20% of total calories) can impair hormonal function over time.

Total calories, covered in calorie balance explained , set the overall direction (gain, maintain, lose). Macros determine the composition of those calories, which affects performance, body composition and satiety independent of the total.

How to set your macro targets

• Step 1 - set protein first: 1.6-2.2g per kg of bodyweight per day, regardless of whether the goal is muscle gain or fat loss.
• Step 2 - set fat: roughly 20-30% of total calories, or a simple 0.8-1g per kg of bodyweight as a starting point.
• Step 3 - fill the remainder with carbohydrates: once protein and fat are set, whatever calories remain (based on your total calorie target) go to carbohydrates. For most training individuals, this lands around 3-5g per kg of bodyweight.

This order matters. Protein and fat have minimum effective ranges tied to muscle retention and hormonal health; carbohydrates are the flexible variable that absorbs whatever is left once the other two are covered.

Working out your targets by hand is tedious and easy to get wrong. dotmoovs calculates your protein, carb and fat targets automatically from your training load and goal, and adjusts them as your programme changes.

Macro splits by goal

• Muscle gain - protein 1.6-2.2g/kg, fat 20-25% of calories, carbohydrates filling the remainder at a modest calorie surplus.
• Fat loss - protein at the higher end (2.0-2.4g/kg) to protect muscle in a deficit, fat around 20%, carbohydrates filling the remainder at a modest calorie deficit.
• Performance / maintenance - protein 1.6-2.0g/kg, fat 25-30%, carbohydrates higher to support training volume and intensity, covered further in pre and post-workout nutrition.

Tracking without obsession

• Track for 1-2 weeks to learn portion sizes and build intuition, then shift to tracking loosely (protein and total calories only, letting carbs and fat float within a reasonable range).
• Weigh food only during the learning phase. Long-term, visual portion estimates are accurate enough for almost everyone outside of competitive bodybuilding.
• Hitting a macro target within 5-10g most days is functionally identical to hitting it exactly. Precision beyond that produces no measurable benefit for the average trained individual.

Manually logging every meal is the main reason most people quit tracking macros within two weeks. dotmoovs makes logging fast enough that it actually sticks, and shows your weekly average instead of obsessing over daily precision.

Common mistakes

• Cutting fat too aggressively - chasing a high-protein, high-carb split by slashing fat below 15-20% of calories risks hormonal disruption over time, for no meaningful training benefit.
• Ignoring total calories while tracking macros - macros can be technically hit while total calories are wrong for the goal. Macros are a subdivision of calories, not a replacement for calorie balance.
• Treating every gram as sacred - daily variance of 5-10g per macro is normal and irrelevant to outcomes. Weekly consistency matters far more than daily perfection.
• Under-eating carbohydrates around training - cutting carbs too low undermines training performance and recovery, a topic covered directly in nutrition for training performance.

dotmoovs tracks your macros alongside your training log, so you can see directly whether your nutrition is supporting or undermining your sessions. Download the app and set your first macro targets.

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