What is a Refeed Day?▼
A refeed day is a planned day of eating at maintenance calories with a high carbohydrate intake — not a free pass to eat whatever you want. During a prolonged calorie deficit, your body reduces leptin (a hormone that regulates hunger and metabolic rate) and depletes muscle glycogen stores. A structured refeed temporarily addresses both.
Unlike a cheat meal, a refeed is macro-controlled: protein stays high to protect lean mass, fat is capped at 50g (to maximise carb allocation), and the bulk of calories come from carbohydrates. This carb-heavy approach maximises the leptin response and fully restores glycogen. Schedule refeeds every 1–2 weeks during a cut for best results.
The Science Behind Refeed Days
Leptin is a hormone produced by fat cells that signals satiety and regulates energy expenditure. When you enter a calorie deficit, leptin levels decline within days, increasing appetite and reducing metabolic rate — your body's way of conserving energy. Strategic refeeds temporarily spike leptin, helping to reset these adaptive responses.
Why Carbs Are the Priority
Carbohydrates drive leptin production more effectively than protein or fat. When you consume a large carbohydrate bolus, insulin rises, which stimulates leptin secretion from adipose tissue. This is why refeed days are carb-focused rather than simply high-calorie. Fat, despite being calorie-dense, has a weaker effect on leptin restoration and is kept low so your calorie budget can be directed toward carbs.
Glycogen Replenishment
Prolonged dieting gradually depletes muscle glycogen stores, which can impair training performance, recovery, and even protein synthesis. A full refeed at maintenance restores glycogen completely, allowing you to return to your next training sessions with full energy reserves. This is especially important for strength athletes and anyone doing high-intensity exercise while dieting.
Psychological Benefits
Beyond the hormonal and physiological effects, regular refeeds improve long-term diet adherence. Knowing that a planned high-carb day is scheduled in a few days makes it significantly easier to maintain strict adherence in between. This psychological relief reduces the risk of unplanned diet breaks and binge episodes that can undo weeks of progress.
How to Schedule Refeeds
Higher Body Fat (>20%)
Every 2 weeks. Leptin is better maintained at higher body fat levels.
Moderate Body Fat (12–20%)
Every 7–10 days. Sweet spot for most recreational dieters.
Lean (<12%)
Every 5–7 days. Lean individuals experience greater hormonal blunting.
Frequently Asked Questions
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