This module identifies common protein, carbohydrate, and fat sources and explains why foods within the same macro group can still differ significantly in calories, volume, and nutrient density.

Why Macro Sources Matter

Foods with the same calories or macro totals can still differ in: vitamins and minerals, fibre & satiety.
The goal is not just to hit calorie or macro targets, but to choose foods that fit the current phase and support adherence.

Sort the Macros

Decide which macro group each ingredient primarily belongs to. Tap Protein, Carbohydrates or Fats.

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Which group does this primarily belong to?

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Protein Sources and Leaner Swaps

Protein supports recovery, muscle gain, and muscle maintenance.
Common high-protein foods include: steak, fish (including tuna), lean minced meat, chicken, low-fat cheese, cottage cheese, edamame, tempeh, tofu, protein powders, Greek yogurt & egg whites.
Meat cuts are not interchangeable: Ribeye (100 g): 290 calories, 24 g protein, 22 g fat | vs | Rump steak (100 g): 190 calories, 30 g protein, 7 g fat
Mince also varies a lot: Extra lean beef mince (100 g): 137 calories, 21 g protein, 5 g fat | vs | Regular/three-star mince (100 g): 254 calories, 17 g protein, 20 g fat
Chicken cuts differ too: Chicken breast (100 g): 165 calories | vs | Chicken thigh (100 g): 209 calories
When swapping proteins use the Macro Swap Calculator, ensure you check the cut and fat content, not just the food category.

Carbohydrate Sources and Volume

Carbohydrates provide energy for training, and this helps to to build muscle and even preserve muscle during a deficit.
Common carb sources include: white rice, brown rice, oats, pasta, fruit such as bananas and apples, beans, potatoes, breads and wraps, and noodles.
Carb choices should match the phase you are in. For instance, pumpkin is very low in calories and carbs, so it is useful when you need a lot of food volume in a deficit, and rice is a strong option for an improvement or building phase because it has less volume making it easier to eat more.
High-volume, low-calorie carbs are useful when hunger is high; more calorie-dense carb choices are better when you need to eat more total energy.

Fat Sources and Calorie Density

Fats are essential for hormonal health and nutrient absorption. They are especially important for female hormonal function and cycle health.
Fats make foods satiating and help regulate blood glucose spikes, so including them consistently throughout the day is key.
Common fat sources include: olive oil, avocado, nuts and seeds, nut butters, butter, shredded coconut, oils, fatty cuts of meat, salmon, and egg yokes.
Fat is calorie-dense, so portion size matters. For instance, 1 tablespoon olive oil: 135 calories

Key Takeaway

Protein, carbs, and fats all found in multiple food sources, but those sources are not nutritionally equal.
The best choice depends on the goal, the phase of training or dieting, and how much volume or calories are needed.
When shopping or swapping foods, compare the actual macros and calories rather than assuming all foods in the same category are equivalent.

Managing a budget?

Ok, so you were prescribed 125 g of extra lean beef mince, but you can only afford to buy 1 x 500 g packet for the week. What do you do? Do you pick up the cheaper regular beef mince and use 125 g of that instead? Well, I absolutely wouldn’t, and this is where looking at the actual maths matters.

125 g extra lean mince is roughly 170 calories, 27 g protein and 6 g fat. If we swap that for 125 g of regular 80/20 mince, we’re looking at roughly 315 calories, 21 g protein and 25 g fat.

So the cheaper mince isn’t giving us a cheaper version of the same nutritional product. We’ve added roughly 145 calories, most of which are coming from an extra 19 g of fat, while actually getting LESS protein.

Instead, I’d buy the one 500 g packet of extra lean mince and divide it across the seven meals, giving us roughly 70 g per serve. 70 g extra lean mince = 95 calories, 15 g protein and 3 to 4 g fat.

Now we have around 75 calories left before we’ve even reached the calories of your original 125 g extra lean serve, so use them. Add something like 60 g of edamame and your meal comes to: 70 g extra lean mince + 60 g edamame = 170 calories, 21 g protein and 7 g fat, plus some extra fibre and food volume.

So now look at the actual choices:

125 g extra lean = 170 cals | 27 g protein | 6 g fat

125 g regular 80/20 = 315 cals | 21 g protein | 25 g fat

70 g extra lean + 60 g edamame = 170 cals | 21 g protein | 7 g fat

That third option is the compromise I would make every single time. You’re getting close to the SAME protein as the regular mince option, for around 145 fewer calories and 18 g less fat, while stretching the more expensive packet across the entire week.

Eating on a budget doesn’t always mean finding the cheapest version of a food. Sometimes it means understanding what that food was actually doing in the meal and finding the most efficient way to fill the gap.

Types of Proteins, Fats & Carbs