Another length: 16–20h 20–24h 24–36h 36–48h 48–72h 3–5 days 5+ days

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How to break a fast — your plan

You fasted: 12 to 16 hours · An overnight fast, 12:12 or 14:10.

Eat your normal meal. There is nothing to be careful about.

How well this is known: This is the one band where the honest answer is that nothing special is required, and it is honest because an overnight fast is the baseline condition every nutrition study measures people in.

  1. Straight away
    A normal meal

    No sequence, no waiting, no first-food rule. If you want one thing out of this band, make it protein, because protein is the macronutrient most people breaking a 16:8 fast fall short on across the day.

    • Chicken or turkey with cooked vegetables a normal plate
    • Oily fish with vegetables a normal plate
    • Eggs with vegetables and toast a normal plate
    • Lentil or bean stew a normal bowl
Avoid at first

Portions are rules of thumb, not measurements. No study has established the right first-meal size after any length of fast, and this sheet says so rather than printing a figure it cannot defend. What is reliable is the direction of the error: people overshoot. Stop while you could still eat more.

Never skip, delay or adjust medication to protect a fast. If a medicine needs food, the food wins. Nothing on this sheet is medically reviewed; every guideline figure on it names the guideline it came from.

getfasted.app/tools/how-to-break-a-fast — every length, with the reason behind each step. Not medical advice.