Best Foods for Building Muscle: Protein, Leucine, and Calories

A meta-analysis found protein intakes up to about 1.6 grams per kilogram of body weight per day increased muscle and strength gains from resistance training, with little added benefit beyond that.^[1] Spreading protein across meals helps.

These foods carry the most protein per 100 grams:

Leucine is the branched-chain amino acid that switches on muscle protein synthesis after a meal; roughly 2 to 3 grams per meal is a common target.^[2] Animal proteins are the densest sources.

Muscle growth is easier in a small calorie surplus. Pair the protein above with enough total food to support training and recovery.

Very high protein intakes may also affect cellular recycling processes like autophagy, the body's system for clearing out damaged proteins, which plays a role in muscle and heart tissue upkeep.^[3] Some researchers also caution that extreme protein or supplement claims deserve scrutiny, since not all marketed benefits hold up to evidence.^[4] Gut health matters too, since intestinal permeability, sometimes called a leaky gut, can influence how well nutrients like protein are absorbed and how the body responds to inflammation from training.^[5]

Hit your daily protein target with leucine-rich foods spread across meals, train progressively, and keep energy adequate. Rank any food by protein or leucine in the spreadsheet.

Put this to work in your own food log. Track it free with Ration →