# How Much Protein You Need to Build Muscle
Building muscle requires eating enough protein, but the exact amount depends on your training intensity and body composition goals. Research from the International Society of Sports Nutrition establishes that people engaged in resistance training need between 1.6 and 2.2 grams of protein per kilogram of body weight daily to maximize muscle growth. Someone weighing 180 pounds (82 kilograms) would target roughly 130 to 180 grams of protein each day.
The timing of protein intake also matters. Studies show that consuming protein within two hours after strength training delivers amino acids to muscles when they're primed to use them. This post-workout window doesn't need to be immediate, but consistency throughout the day helps more than a single large dose.
Distribution across meals appears optimal for muscle building. Research led by sports nutrition scientists finds that spreading protein intake evenly across three to four meals, rather than frontloading it at dinner, creates a more sustained stimulus for muscle protein synthesis. Eating 30 to 40 grams of protein per meal works well for most people.
Different protein sources deliver results. Eggs, chicken, fish, Greek yogurt, cottage cheese, and legumes all support muscle growth effectively. Plant-based options work equally well when combined thoughtfully to ensure complete amino acid profiles.
Individual needs vary based on age and training experience. Older adults may benefit from higher intakes (up to 2.4 grams per kilogram) to counteract age-related muscle loss, while beginners typically see results at the lower end of the range.
Meeting protein targets supports your broader fitness objectives. The standard recommendation ensures your muscles have the building blocks needed for repair and growth after training sessions. Combined with consistent resistance exercise and adequate recovery, proper protein intake becomes a practical lever for reaching body composition goals.