How Long Should I Fast?

Three questions, one honest answer. No quiz funnel, no email capture — just a recommendation based on your fasting experience.

Your starting point: —

The honest principle: the right fasting length is the longest one you can repeat without thinking about it. A boring 14 you keep beats a heroic 20 you quit — every time, no exceptions.

Progressing: when your current length feels uneventful for two straight weeks, add two hours. That's the whole advancement system. No jumps, no drama.

Frequently asked questions

Is longer always better?

No. Longer fasts have different trade-offs, not bigger trophies. Daily consistency at 14–16 beats occasional 24s for almost every goal people actually have.

How fast will I see results?

Rhythm first, results follow — most people feel the routine click in 1–2 weeks. The scale is the last place it shows up, not the first.

What if I pick wrong?

You can't. Start where the quiz puts you; adjust after two weeks of data. The quiz is a starting line, not a verdict.

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More calculators: 16:8 · 18:6 · 20:4 · OMAD · Fast end time · Eating window

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