When you’re cutting, protein does two jobs. It keeps the muscle you built while you eat less, and it keeps you full on fewer calories. The per-meal split matters too, because how you spread protein across the day changes how well your body uses it.
The Daily Target
The number that shows up across the sports nutrition literature is about 1.6 to 2.2 grams of protein per kilogram of body weight per day for people who lift weights. Position stands from sports nutrition and sports medicine bodies land in that neighborhood, and meta-analyses of resistance training trials point to the same range for muscle gain and retention. The lower end of the range, around 1.6 g/kg, is where the benefit of extra protein starts flattening out for most people eating at maintenance or a surplus.
A calorie deficit shifts the picture toward the upper half. When you’re eating less, your body is more willing to break down muscle for fuel, and a higher protein intake is one of the better defenses against that. Reviews on weight loss in lean, trained people favor 2.0 g/kg or a bit above. The leaner you are and the steeper the deficit, the more that matters.
So if you lift and you’re cutting, aim for 1.8 to 2.2 g/kg per day.
The Per-Meal Target
Muscle protein synthesis responds to the amount of protein in a meal, and the response levels off after a certain dose. Studies measuring muscle protein synthesis after a single feeding found that 0.3 to 0.4 g/kg per meal pushes it close to its ceiling in most people. For a lot of lifters that works out to about 20 to 40 grams.
That figure marks where the response saturates. Eating more than 0.4 g/kg in one sitting doesn’t hurt you, and your body still digests and uses the extra protein. It just adds less to muscle protein synthesis in that particular meal. On a cut, it also keeps you full.
Spreading your daily total over 3 to 5 meals lets you hit that per-meal dose several times a day. Three meals can work. Four or five makes it easier to reach a high daily total without forcing a 70 gram dinner.
Worked Example: 60 kg
Take a 60 kg person who lifts and wants to lose fat.
Daily protein at 1.8 to 2.2 g/kg is 108 to 132 grams. Say they aim for 2.0 g/kg, which is 120 grams.
The per-meal dose at 0.3 to 0.4 g/kg is 18 to 24 grams. Split across four meals, 120 grams comes to 30 grams each, which clears the per-meal threshold with room to spare. Three meals of 40 grams would also work, though that’s a bigger ask at breakfast.
A day might look like 30 grams at breakfast (Greek yogurt and eggs), 30 at lunch (chicken or fish with vegetables and rice), 30 at an afternoon meal (a protein shake plus a small snack) and 30 at dinner.
Worked Example: 90 kg
Take a 90 kg person with the same goal.
Daily protein at 1.8 to 2.2 g/kg is 162 to 198 grams. Aiming for 2.0 g/kg gives 180 grams.
The per-meal dose at 0.3 to 0.4 g/kg is 27 to 36 grams. Four meals at 45 grams each reach 180 grams, which sits above the saturation point for each feeding. That’s fine, because going higher here serves the daily total. Five meals of 36 grams also gets there, and it lands each one inside the 0.3 to 0.4 g/kg window.
A day might look like 40 grams at breakfast (three eggs, egg whites and yogurt), 45 at lunch (a large portion of lean beef or fish), 45 at an afternoon meal and 50 at dinner.
What to Do with the Numbers
The ranges come from studies on resistance-trained adults, so they fit people who lift. Anyone with kidney disease or another medical condition should check their protein target with a doctor before raising it.
Weigh yourself in the morning and use your actual body weight to set the target. If you carry a lot of body fat, using your goal weight or an estimate of lean mass keeps the number sensible.
Anchor each meal on a protein source first, then build the rest around it. A palm-sized portion of meat or fish covers most of a 25 to 35 gram dose, and eggs, dairy, tofu or legumes fill in.
Hit the daily total before you worry about the per-meal split. The daily number drives most of the result, and the distribution is a refinement on top.
Keep the calories honest too. High protein with a deficit that’s too steep still costs you muscle, so a loss of roughly half to one percent of body weight per week is a better pace for most lifters.
Getting This Right in Barcelona
On a high-protein cut, the work is cooking four or five protein-anchored meals a day and weighing portions without it taking over your week.
If you live in Barcelona and would rather skip the prep, HealthyFoodBCN cooks and delivers meals sized to the person. The chef asks for your age, weight and activity level and sets the portions and protein from that, so a 60 kg lifter and a 90 kg lifter get different plates. A single meal starts at €20 a plate with VAT included. My Barcelona healthy meal plan guide has more on the options in the city.
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