Fasting Library
Calm, structured education on intermittent and extended fasting: practice, history, human context, and research limits.
Educational only. Not medical advice. See our disclaimer.
Start a timer: 16:8 timer · OMAD timer · online fasting timer.
- Fasting Fundamentals: The main notes: what fasting is, safety, hunger, hydration, timer stages, schedules, and how to stop or eat again gently. (12/12 published)
- 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. Vinegar, salt stacks, and extra hours are not the method. (5/5 published)
- Longer fasts: How-to notes for a stretch past a daily window: safety first, a plan, water, and an exit. A 72-hour challenge, stacked 16:8s, and a clinic at home are not the method. (4/4 published)
- Very long fasts: For people who have already chosen a fast past 72 hours: signs that end it, why a clinician is the default, and a few known cases with their limits. (3/3 published)
- 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. (5/5 published)
- 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. (7/7 published)
- Questions from the community: Short answers to questions people ask, with links to the notes that go into the detail. Not a salt recipe, not a plan for a week of water only, not a plan for going without water, and not a separate timer for someone already in ketosis. (10/10 published)
- History of Fasting: From survival and ritual to medicine, protest, and modern wellness: what people did and believed, not diet prescriptions. (6/6 published)
- Humans, Food & Feast–Famine: Meal patterns before and after agriculture, with hard limits on what prehistory can prescribe for modern schedules. (6/6 published)
- 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. (10/10 published)
- Fasting, myths and science: Claims people repeat about fasting, set next to studies this library has opened. Only published notes are listed. (1/1 published)