Distribute 0.7–1.0 g/lb of protein across 3–4 meals per day

Muscle protein synthesis requires adequate protein per meal and consistent daily distribution — not just hitting a daily total.

Why it works

Muscle protein synthesis (MPS) is stimulated by leucine, an essential amino acid that acts as a mTORC1 activator in muscle cells. Each meal needs approximately 2.5–3 g of leucine to maximally stimulate MPS — achievable with roughly 25–40 g of high-quality protein per meal. Spreading intake across meals produces more total MPS than concentrating the same total protein in one or two large servings, because the MPS response plateaus above a per-meal threshold.

How to do it

1. Calculate your target: 0.7–1.0 g of protein per lb of body weight (1.6–2.2 g/kg) — the higher end is appropriate for older adults and those doing heavy training.
2. Divide this across 3–4 meals, each containing 25–50 g of protein depending on body size.
3. Prioritize high-leucine sources: chicken, fish, eggs, Greek yogurt, cottage cheese, or whey protein for those who use it.
4. Do not skip a meal’s protein and "bank" it for a larger evening dose — the per-meal response, not the daily total alone, drives MPS.

Evidence

Multiple RCTs from Phillips’ lab and others consistently find that muscle protein synthesis is maximized by per-meal protein doses of 25–40 g in younger adults, rising toward 40+ g for older adults due to anabolic resistance. Even distribution drives more total MPS than the same protein consumed in one or two sittings. (rct)

Exact thresholds vary by body size, age, and whether the person is training. The per-meal leucine threshold is a useful heuristic rather than a precise prescription.

Sources

• Moore et al. (2009), "Ingested protein dose response of muscle and albumin protein synthesis after resistance exercise," American Journal of Clinical Nutrition
• Churchward-Venne et al. (2012), "Supplementation of a suboptimal protein dose with leucine," Journal of Physiology

Common mistake

Eating a low-protein breakfast and lunch, then a large dinner with most of the day’s protein. The morning and midday MPS opportunities are missed regardless of how much protein arrives at night.