Do I need a protein shake to build muscle?
No. Shakes are a convenient way to reach your daily total. If you already hit your target with food, they add nothing.
Protein For Muscle Building
Muscle is built by training. Protein is the raw material that makes the adaptation possible — and most people who plateau are short on total daily grams, not on any particular supplement.
The number that matters
1.6–2.2g of protein per kilogram of bodyweight per day, every day, is the range supported by the research. Above that, additional protein has not been shown to add muscle.
You also need a small calorie surplus and progressive resistance training. Protein without the training stimulus is just food.
Leucine and the per-meal threshold
Leucine is the amino acid that switches on muscle protein synthesis. A meal needs roughly 2.5–3g of leucine to trigger a full response, which corresponds to about 25–40g of a quality protein.
Animal proteins, soy and whey reach that threshold easily. Lower-leucine plant sources need slightly larger portions, or combining two sources in one meal.
Best sources for muscle gain
| Food | Protein | Calories |
|---|---|---|
| 🥤 Whey protein isolate | 90g | 400 |
| 🌱 Soy protein isolate | 90g | 390 |
| 🐔 Chicken breast (cooked) | 31g | 179 |
| 🥩 Beef sirloin (cooked) | 29g | 196 |
| 🐟 Salmon (cooked) | 25g | 250 |
| 🍢 Tempeh | 19g | 193 |
| 🥚 Whole egg | 13g | 155 |
| 🥣 Greek yogurt (plain, 0%) | 10g | 59 |
Per 100g.
What actually matters, in order
- Total daily protein — by far the biggest factor.
- Progressive overload in training.
- Enough total calories to support growth.
- Spreading protein across three or four meals.
- Protein near the training session — a small effect, not a requirement.
- Specific supplements beyond protein and creatine — marginal at best.
Add up your whole meal
Type what you ate in plain words and Protein Hunter returns the protein and calories for the full plate.
Try the Protein CalculatorCommon questions
Is there an anabolic window after training?
The window is far wider than once believed — several hours. Total daily intake matters much more than eating immediately after a session.
Can you build muscle on a plant-based diet?
Yes. Aim about 10–20% higher in total grams and lean on soy, seitan, legumes and a plant protein blend to reach the per-meal leucine threshold.
Keep reading
Daily protein needsCalculate your own target.Protein for athletesEndurance and team sports.Protein by goalFoods matched to muscle gain.What is Protein Hunter?
Protein Hunter is a protein and nutrition app with a database of 232 foods — from a leaf of kale to a wagyu steak — plus AI tools that answer protein questions, count a whole meal, build recipes to a macro target, and track what you actually eat.
- Search any food
- Count a full meal
- Recipes to your macros
- Scan a plate or label
Why it's different: the numbers are calculated from a fixed ingredient database rather than guessed, and when a target is not physically achievable the app says so instead of inventing a figure.
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