Research
Macro partitioning
Post-exercise nutrient timing may be beneficial for individuals training in a fasted state or those with long gaps (>3-4 hours) between their last meal and exercise.
If you train first thing in the morning before eating breakfast, or if it has been 4+ hours since your last meal, eat a protein-rich meal (25-40g) as soon as possible after your workout. This helps reverse the catabolic state caused by training on an empty stomach.
ModerateConditionalMEDIUM confidence
when training is initiated more than ~3–4 hours after the preceding meal, the classical recommendation to consume protein (at least 25 g) as soon as possible seems warranted in order to reverse the catabolic state.
Why this rating
Based on theoretical mechanisms and acute studies, but chronic data is mixed.
Source
Nutrient timing revisited: is there a post-exercise anabolic window?
Alan A. Aragon et al. · Journal of the International Society of Sports Nutrition · 2013
DOI 10.1186/1550-2783-10-5
narrative_reviewCited 136×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
More from this paper
- Immediate post-exercise nutrient timing does not provide a hypertrophic advantage over delayed intake when total daily protein and energy intake are matched.Good
- Pre-exercise protein ingestion can sustain elevated amino acid levels into the post-exercise period, rendering immediate post-exercise protein dosing redundant for most trainees.Good
Related findings · Macro partitioning
- Total daily protein intake of 1.6 g/kg/day is sufficient for maximizing resistance training-induced muscle gains, with an upper confidence interval of 2.2 g/kg/day.Strong
- Resistance exercise training combined with sufficient dietary protein intake acts synergistically to maximize skeletal muscle hypertrophy, with protein intake saturating around 1.6 g/kg/day for general populations and potentially requiring 2.0-2.2 g/kg/day for resistance-trained individuals.Strong
- Trans fats should be completely eliminated from the diet, as they increase LDL cholesterol, decrease HDL cholesterol, and are directly associated with increased coronary risk.Strong
This is one finding among thousands. Every one is graded and traced to its source, so you can see what the evidence actually supports. Browse the research →