Example:
Lightly active person, who trains 3x per week and weighs 80kg.
Total Calorie Multiplier from table = 1.2
(80 x 22) x 1.2 = 2,112 kcal/day (maintenance calories)
Calculating Protein
The Simplest Way
The simplest way to set a protein target is using your goal body weight. We use the target of 2g/kg or 1g/lb.
Example:
Your goal body weight is 70kg.
70kg x 2g = 140g/day
A More Accurate Way
We like using Lean Body Mass (LBM) to calculate individual protein targets because body fat (especially if it’s relatively high) can distort numbers slightly. Again, we will use the same 2g/kg protein target, but this time for lean body mass instead of goal body weight.
Example:
1. Calculate lean body mass:
A male who weighs 85kg with 30% body fat.
30% of 85kg is 25.5kg.
Total fat mass= 25.5kg.
85kg (total body mass) – 25.5kg (total fat mass) = 59.5kg.
Lean body mass = 59.5kg.
2. Use the 2g/kg multiplier:
59.5kg x 2g = 119g Protein.
Weight Loss
As stated in Golden Rules for Fat Loss, in order to lose weight, your intake needs to be less than your maintenance calories (a negative energy balance). So, we will keep the protein goal the same, but decrease the calories accordingly. The size of the deficit will depend on how much and how quickly you want to lose weight;
- Short, aggressive weight loss – 2-4 weeks at 60-70% maintenance (30-40% deficit).
- Moderate weight loss – 4-12weeks at 75-85% maintenance (15-25% deficit).
- Steady and Sustainable – 3+ months at 85-90% of maintenance (10-15% deficit).
Example:
Maintenance calories are set at 1,800kcal/day.
Moderate weight loss set at 80% of maintenance (20% deficit)
80% of 1,800 = 1,440kcal
Weight loss calories = 1,440kcal/day.
Note: This deficit will be achieved by reducing fats or carbohydrates, or both. Your total protein intake will remain the same (2g/kg lean body mass). Your margin for error is smaller when hitting your calorie and protein target when losing weight compared to gaining weight.
Weight Gain (Muscle Gain)
For weight/muscle gain, we tend to set calorie and protein minimums and go from there. Going slightly over these targets isn’t the end of the world, as the margin for error is larger than losing weight. But it’s important not to go too far over and start rapidly gaining weight, as this will be accompanied by high amounts of fat mass. We, therefore, prefer a “lean bulking” method.
A lean bulk is set between 10-20% over maintenance calories. This should be sufficient to build lean muscle if you’re training and sleeping well.
Example:
Maintenance calories = 1,800kcal
120% of maintenance is set (20% Surplus)
120% of 1,800kcal = 2,160kcal
Note: As with weight loss, this energy difference will be achieved by increasing fats, carbohydrates or both and total protein intake will remain the same (2g/kg lean body mass).
What’s Next?
As mentioned before, now that you’ve got your numbers why not watch our MyFitnessPal guide video to put them into action. Remember that this is all a case of trial and error, hopefully, this process builds accountability and awareness regarding your personal intake. You will also find that you’ll build some skills when trying to hit your numbers. Please let us know what you find useful!