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How the timer’s stage names work, plus short tips for each range. These names follow elapsed hours. They are not lab results. Read the Fasting Library for the longer notes. Not medical advice. See our disclaimer.
Start a timer: 16:8 timer · OMAD timer · online fasting timer.
Fasting Library
- Fasting Library: Calm, structured education on intermittent and extended fasting: practice, history, human context, and research limits. Not medical advice.
- Fasting Fundamentals: Practical spine: what fasting is, safety, hunger, hydration, timer stages, schedules, and how to stop or refeed gently.
- How to make fasting easier: How-to notes for quieter hours: start near the overnight gap you already have, then water, an optional unsweetened mug, rest, and a window that fits a real day — not vinegar, salt stacks, or extra hours. Not a hack list. Not medical advice.
- Longer fasts: How-to notes for a stretch past a daily window: safety first, a plan, water, and an exit — not a 72-hour challenge, not stacked 16:8s, not a clinic at home. Not a protocol. Not medical advice.
- Very long fasts: A companion for people who have already chosen a stretch past 72 hours: signs that end it, why a clinician is the default, and a few known cases with their limits. Not encouragement. Not a protocol. Not medical advice.
- Using the Clock: The timer as a tool: what a fasting clock is for, how to choose one, what this one does, and what it refuses. Not a protocol. Not a scoreboard. Not medical advice.
- Everyday Fasting: Common questions from people actually using a window: what usually ends a fast, what to eat when you eat, first-week snags, real-life schedules, periods and hormones, why some people keep the hours, and alcohol on a daily window. Not a purity contest. Not medical advice.
- History of Fasting: From survival and ritual to medicine, protest, and modern wellness: what people did and believed, not diet prescriptions.
- Humans, Food & Feast–Famine: Meal patterns before and after agriculture, with hard limits on what prehistory can prescribe for modern schedules.
- What Research Suggests: How to read fasting studies, what TRE and related trials suggest, what headlines get wrong, how training sits with a window, what papers report as harm, and what is still unknown. Always with limits.
- What the stages on the timer mean: How the educational badges map to elapsed hours.
- Who should be careful with fasting: Safety first, before a longer window.