The 4 Rs of recovery — Refuel, Rehydrate, Repair, Rest
Recovery is the window in which adaptation actually happens. These four targets, executed well, compound across a training block.
The modern recovery framework (Kerksick et al., ISSN) is Refuel, Rehydrate, Repair, Rest.
Refuel. 1.0–1.2 g/kg carbohydrate per hour for the first 4 hours when the next session is less than 8 hours away. Higher-glycemic-index carbohydrate is preferred in this window (rice, potato, white bread, sports drinks, bananas). When the next session is more than 24 hours away, total daily intake dominates over immediate refuelling — a big carbohydrate-rich dinner and a regular breakfast will do the job.
Rehydrate. 125–150% of fluid losses in the 2–4 hours post-run (Shirreffs & Maughan, MSSE, 1996). The excess accounts for continued sweating and urine production. Include sodium (500–1,500 mg/L) to retain fluid rather than pee it back out. A 1 kg post-run weight loss means drinking 1.25–1.5 L in the following 2–4 hours, not all at once.
Repair. 20–40 g high-quality protein within 0–2 hours post-run, with attention to leucine content (2.5–3 g leucine to hit the mTORC1 activation threshold). Whey, Greek yogurt, eggs, cottage cheese, pea + rice protein, soy milk all work. Post-exercise protein + carbohydrate may modestly enhance glycogen replenishment when carbohydrate is below 1.2 g/kg/hr (Berardi, Ivy). Chocolate milk — the ~4:1 carb:protein ratio — delivers equivalent recovery outcomes to commercial recovery drinks (Pritchett & Pritchett 2012; Cockburn 2008) at a fraction of the cost.
Rest. Sleep is the dominant recovery driver. Nutritional supports for sleep: tart cherry (melatonin precursors), magnesium glycinate 200–400 mg, glycine 3 g, tryptophan-rich foods (turkey, dairy, oats). Caffeine within 6–8 hours of bed impairs sleep quality even when subjective sleep feels normal (Drake et al., JCSM, 2013).
DOMS-mitigating nutrients with evidence: tart cherry (Howatson 2010), curcumin (Nicol 2015; Tanabe), omega-3 (Jouris 2011; Corder), adequate protein. Ice baths remain debated; nutrition is the more robust intervention.
Collagen peptides + vitamin C, 1 hour pre-exercise. Shaw et al.'s 2017 AJCN study — 15 g hydrolysed collagen or gelatin with 50 mg vitamin C, ingested 60 minutes before loading exercise, doubled collagen synthesis markers. Keith Baar's lab at UC Davis has extended this to specific loading protocols for tendon rehabilitation. This is the single most important recovery finding in the last decade, and it is absent from almost every consumer running platform.
Anti-inflammatory meal pattern. Fatty fish 2–3×/week, olive oil, berries, leafy greens, nuts, turmeric, ginger. The Mediterranean-inspired bowl of whole grain + fish/legume + roasted vegetables + olive oil + lemon is almost the perfect recovery meal — carbohydrate for glycogen, protein for repair, fats for inflammation, micronutrients for cellular function.
The single most common recovery mistake is treating "recovery" as an event that happens after hard sessions. It is a continuous state that depends on sleep, daily protein distribution, daily adequate carbohydrate, and consistent hydration. You cannot patch a chronically under-recovered week with a smart post-run smoothie.