Hypertrophy: Peri-Workout Nutrition — Pre, Intra, and Post-Workout Protocols
Pre-workout protein (25–40g) consumed 1–3h before training provides anabolic amino acids through the session, effectively widening the post-workout window. Post-workout protein matters more for fasted training. Intra-workout carbohydrates improve performance for sessions >90 minutes (Aragon & Schoenfeld, 2013 — PMID 23360586).
| Measure | Value | Unit | Notes |
|---|---|---|---|
| Pre-workout protein dose | 25–40 | g of high-quality protein | Consumed 1–3h before training; provides amino acids throughout session; reduces urgency for immediate post-workout protein |
| Pre-workout carbohydrate dose | 40–60 | g of moderate-GI carbohydrate | Provides glycogen substrate for training session; consumed 1–2h pre-workout to prevent GI distress during exercise |
| Post-workout protein window (non-fasted) | within 2 hours | practical guideline | Aragon & Schoenfeld 2013: urgency reduced when pre-workout protein was consumed; 2h window is conservative and adequate |
| Post-workout protein dose | 25–40 | g of high-quality protein | Same leucine threshold applies; 30g whey is common; whole food equivalent (150g chicken, 200g Greek yogurt) also effective |
| Intra-workout carbohydrate: session length threshold | 90 | minutes | Sessions under 90 minutes do not benefit meaningfully from intra-workout carbohydrates if pre-workout nutrition was adequate |
| Protein + carbohydrate co-ingestion post-workout | ~40% faster | glycogen resynthesis vs. protein alone | Alghannam 2018: adding carbohydrate to post-workout protein significantly accelerates glycogen resynthesis vs. protein alone |
Peri-workout nutrition — the pre, intra, and post-workout feeding windows — represents a tier below total daily nutrition in hypertrophy priority, but meaningfully above random meal timing. The key insight from Aragon & Schoenfeld’s 2013 nutrient timing review (PMID 23360586): the post-workout window is not as narrow as popularized, pre-workout nutrition largely determines post-workout urgency, and total daily intake dwarfs any timing effect.
The practical synthesis: prioritize a solid pre-workout meal (1–3 hours prior), train effectively, and consume protein + carbohydrates within 2 hours post-workout. This captures the majority of available timing-related benefit with minimal complexity.
Peri-Workout Nutrition Protocol
| Window | Timing | Protein | Carbohydrate | Priority |
|---|---|---|---|---|
| Pre-workout meal | 1–3h before | 25–40g (exceeds leucine threshold) | 40–60g (moderate GI) | High |
| Pre-workout supplement | 30–45 min before | Optional: 5–10g EAAs or BCAAs | 20–30g (if fasted) | Low-moderate |
| Intra-workout | During training | Optional (fasted only) | Only if session >90 min | Low |
| Post-workout meal | Within 2h after | 25–40g (same leucine threshold) | 40–80g | Moderate (high if fasted) |
| Pre-sleep | 30–60 min before bed | 30–40g casein or mixed protein | Minimal | Moderate |
Tipton’s Foundational Finding
Tipton et al. (2001, PMID 11440894) tested amino acid ingestion timing in a crossover design: EAA + carbohydrate consumed before vs. after resistance exercise. Both conditions improved net muscle protein balance compared to placebo, but the pre-workout condition produced a greater area-under-the-curve amino acid availability during training. The mechanism: consuming protein before training ensures circulating amino acid levels are elevated throughout the session — the pre-workout protein effectively doubles as intra-workout amino acid provision without the logistical challenge of eating during exercise.
Creatine Peri-Workout Timing
Creatine timing is not critical — the phosphocreatine pool fills over 28 days of daily 3–5g dosing and does not fluctuate meaningfully based on single-dose timing relative to exercise. Post-workout creatine may offer a marginal benefit due to post-exercise glucose uptake enhancing creatine transport into muscle, but the effect size is small relative to consistent daily dosing. Taking creatine at a consistent daily time (with food, for GI comfort) produces equivalent results to “optimized” timing protocols.
Related Pages
Sources
- Aragon, A.A. & Schoenfeld, B.J. (2013). Nutrient timing revisited: is there a post-exercise anabolic window? Journal of the International Society of Sports Nutrition, 10(1), 5.
- Tipton, K.D. et al. (2001). Timing of amino acid-carbohydrate ingestion alters anabolic response of muscle to resistance exercise. American Journal of Physiology - Endocrinology and Metabolism, 281(2), E197–206.
- Beelen, M. et al. (2010). Nutritional strategies to promote postexercise recovery. International Journal of Sport Nutrition and Exercise Metabolism, 20(6), 515–532.
- Alghannam, A.F. et al. (2018). Restoration of muscle glycogen and functional capacity: role of post-exercise carbohydrate and protein co-ingestion. Nutrients, 10(2), 253.
Frequently Asked Questions
What should you eat before a workout for hypertrophy?
A pre-workout meal 1–3 hours before training containing: 25–40g of high-quality protein (exceeds leucine threshold, provides anabolic environment through the session) and 40–60g of moderate-GI carbohydrates (rice, oats, potato — provides glycogen substrate without GI distress during training). This meal addresses both fuel availability and amino acid environment simultaneously. Tipton et al. (2001, PMID 11440894) showed that pre-workout amino acid ingestion produces a net anabolic effect during training — the amino acids remain elevated in the blood throughout the workout.
What should you eat after a workout?
Post-workout: 25–40g of high-quality protein (whey, chicken, eggs, Greek yogurt) and 40–80g of carbohydrates (rice, fruit, potato). The protein provides amino acids for MPS; the carbohydrates accelerate glycogen resynthesis and stimulate insulin release (which suppresses muscle protein breakdown). Alghannam et al. (2018, PMID 29462921) confirmed that carbohydrate + protein co-ingestion restores glycogen ~40% faster than protein alone. Whey protein is practical for the post-workout context due to rapid absorption, but any complete protein source within 2 hours is effective.
Should you eat during a workout?
Only for sessions exceeding 90 minutes. Intra-workout carbohydrates (30–60g/hour of simple sugars — glucose/fructose mixtures or sports drinks) benefit endurance performance and have some evidence for maintaining training quality in extended resistance sessions. For typical strength/hypertrophy sessions under 60–75 minutes, intra-workout nutrition provides no meaningful benefit if pre-workout nutrition was adequate. The exception: training in a fully fasted state (>6 hours since last meal), where intra-workout branched-chain amino acids (BCAAs) or an intra-workout protein shake may attenuate muscle breakdown.
How important is the post-workout meal compared to total daily nutrition?
Far less important than total daily nutrition. Aragon & Schoenfeld (2013, PMID 23360586) conducted a systematic review and concluded: when total daily protein and caloric intake are equated, the contribution of precise post-workout nutrition timing to hypertrophy is minimal. The practical priority hierarchy: (1) total daily protein target; (2) leucine threshold per meal; (3) adequate daily carbohydrates; (4) pre-workout nutrition; (5) post-workout nutrition within a 2-hour window. Missing a post-workout meal is far less impactful than chronically underconsuming protein or training volume.