Carb Fasting

Carb fasting on holidays

On a holiday, make the feast a normal carb day. Eat the pie, stuffing, or rolls, and put your near-zero-carb fast days on the calendar around it. The holiday meal becomes the carb day you planned for.

By Greg Clement Updated 1 min read
On this page
  1. Make the feast a carb day on purpose
  2. Bracket the holiday with fast days
  3. After one holiday meal

Treat holiday feasts as planned carb days. Decide that before Thanksgiving dinner, then put your fast days on either side of it.

Make the feast a carb day on purpose

The two-day plan alternates near-zero-carb days with normal-carb days to train your body to switch fuels. That flexibility matters in November. Thanksgiving may be the most carb-forward meal of your year, so schedule it.

Pick the holiday as a normal carb day before it arrives. Then the pie, the stuffing, the rolls, and your grandmother’s once-a-year recipe all fit that day. It’s the eating half of the plan, happening on schedule. I love carbs and hate giving them up, which is why this approach includes normal-carb days.

Bracket the holiday with fast days

Planning starts on the calendar before you reach the dinner table. Here’s a simple way to think about a holiday week:

DayWhat it isWhat you do
Day beforeFast dayNear-zero carb; arrive hungry and fat-adapted
The holidayCarb dayEat the meal you actually want, no scorekeeping
Day afterFast dayBack to near-zero; let the body re-flex

None of this timing is sacred. Run the fast day before, after, or both, depending on what fits your real life and your real family. The point is just to surround a big carb day with low-carb ones, so the feast lands inside the rhythm instead of blowing it up.

After one holiday meal

The plan includes regular carb days, so one large holiday meal fits the structure. Return to your usual rhythm afterward.

If a holiday turns into a holiday week of carb days, notice it and resume your schedule when you’re ready. The repeated rhythm aims to help your body switch between burning carbs and burning fat without policing every plate.

For a structured way to plan feast days into a longer stretch, see how carb fasting compares to carb cycling.

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Questions people ask

Can I eat the Thanksgiving meal on a carb fast?
Yes. Carb fasting alternates near-zero-carb fast days with normal-carb days, so make Thanksgiving a normal day and enjoy the meal. Put the fast days around the holiday. The stuffing fits the plan for that day.
Should I fast before or after the holiday?
Either, or both, depending on your week. Many people run a fast day the day before, eat the feast freely, then fast again the next day. The timing isn't magic. The idea is to bracket a big carb day with low-carb ones.
Will one big holiday meal undo my progress?
No. The plan already includes normal-carb days. One feast is a planned carb day with extra people at the table. Return to your rhythm afterward.