How Much Protein Should You Consume After a Workout?

After a workout, many fitness enthusiasts wonder how much protein they should consume to support muscle recovery and growth. Current evidence-based guidelines from sports nutrition experts recommend ingesting 0.25 to 0.3 grams of high-quality protein per kilogram of body weight within the post-exercise “anabolic window”—typically defined as the first 30 to 60 minutes following resistance training. For a 70-kg (154-lb) adult, this translates to approximately 17.5 to 21 grams of protein.

This amount is sufficient to maximally stimulate muscle protein synthesis (MPS), the biochemical process underlying muscle repair and hypertrophy. Consuming significantly more protein—such as 40 or 50 grams—in a single post-workout dose does not further enhance MPS in most healthy adults; excess amino acids are either oxidized for energy or converted to glucose or fatty acids.

Protein quality matters: sources rich in leucine—a key branched-chain amino acid that triggers the mTOR signaling pathway—such as whey, eggs, lean poultry, or soy, are particularly effective. Timing is also context-dependent: while immediate post-exercise intake is beneficial, total daily protein distribution (e.g., 1.6–2.2 g/kg/day across 3–4 meals) remains more critical for long-term adaptations than rigid adherence to a narrow time window.

Individual factors—including age, training status, overall energy intake, and concurrent carbohydrate consumption—can modulate protein requirements. Older adults may benefit from the higher end of the per-meal range (up to 0.4 g/kg) due to age-related anabolic resistance. Athletes in energy deficit (e.g., during weight loss phases) may also require slightly elevated intakes to preserve lean mass.