How Much Protein Per Day to Actually Build Muscle
If you're trying to add muscle and the scale isn't moving, protein is almost always the first thing to check. Here is the number I give my clients, and exactly how I tell them to hit it.
The number: 0.8 to 1g per pound of bodyweight
If you weigh 180 pounds, aim for 145 to 180g of protein per day. Below 0.8g per pound, muscle growth slows. Above 1g, the extra grams aren't doing more for you. They're just expensive pee. Stay in the band and put your effort into training instead.
Spread it across 4 meals
Your body can only use so much protein in one sitting for muscle protein synthesis. Roughly 30 to 50g per meal, four times a day, beats one giant 200g dinner. Breakfast is where most people miss. Fix breakfast and the day takes care of itself.
Best sources, ranked by what works
Whole foods first: chicken, lean beef, eggs, Greek yogurt, cottage cheese, fish. Whey protein is fine for one or two of your four hits, especially post training. Plant sources work too, you just need 20 to 30 percent more grams to match.
Timing rule: post workout is real, but don't stress it
Get 30 to 50g of protein within two hours of training. That's the window that actually matters. The 'anabolic window' panic about chugging shake the second you re rack the bar is gym bro folklore.
When higher protein helps
Two cases: aggressive cutting (push closer to 1.2g per pound to protect muscle), and over 50 (older lifters need more protein per meal to trigger the same growth response). Otherwise, 1g per pound is the ceiling worth chasing.
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