12:12 Intermittent Fasting
A gentle entry: 12 hours of fasting overnight, 12 hours of eating during the day. Most people already do this without realising it.
A founding-cohort study
Report how you're fasting — and learn what changes for others
Select the option closest to what you're already doing, talk to the study agent, and track how you feel day by day.
Context
Why this matters
Fasting is one of the most-discussed and least-rigorously-studied health practices of the last decade. Self-reports range from "life changing" to "made me miserable" — but very few studies follow real people, doing real protocols, in their real lives.
This study is different. You report what you're already doing. You check in once a day, in less than a minute. Your data joins thousands of others. Over time, patterns emerge.
It isn't a controlled trial. It's something arguably more useful: a high-resolution, longitudinal observation of fasting as people actually do it.
At a glance
Study overview
10
Common protocols reported
7–30 days
Typical duration
3
Participants enrolled
What you do. Select the option closest to what you're already doing (or describe your own), then submit a daily check-in: mood, energy, sleep, hunger, cravings, focus. Optional notes.
What we do. Aggregate the data, surface the patterns, share the findings with the cohort first. Negative results, surprising results, and "no effect" results all get published.
What the agent does. Educates you on fasting science, helps match your self-report to a preset, supports you when it gets hard, and refuses to give you medical advice — that's what your physician is for.
AI guide
Talk to the study agent
Ask the agent how this study works, what to expect, or how reporting works for different protocols.
I'm here to help you understand fasting and match what you're already doing to this observational study. What draws you to fasting right now?
Exploration mode — join the study below to unlock private, memory-aware conversations.
About your protocol
Tell us about your protocol
Select the option closest to what you're already taking or planning. You can update it later.
16:8 Intermittent Fasting
A 16-hour fast with an 8-hour eating window. The classic time-restricted eating pattern.
OMAD (One Meal A Day)
One large nutritious meal per day, water and electrolytes the rest of the time.
24-Hour Fast
A single 24-hour fast, repeated 1–2 times per week. Builds metabolic flexibility quickly.
48-Hour Fast
A 48-hour water fast monthly. Deeper autophagy and metabolic reset territory.
72-Hour Fast
A 72-hour fast, attempted once. For experienced fasters who have done shorter fasts comfortably.
Water Fast (custom duration)
A pure water fast — duration of your choosing. Coordinate with the agent before starting.
Sugar Fast
No added sugar for 30 days. Eat normally otherwise. Resets palate and insulin response.
Lemon Water Fast
A 7-day fluid-only protocol (water + lemon + a pinch of salt). Traditional cleansing approach.
Keto-Fasting Hybrid
A 21-day ketogenic eating pattern paired with a 16:8 daily window. Easier glucose control while learning to fast.
Something else
Describe what you're taking or planning. The study agent can help categorize it.
What you're reporting
Cohort
Community
What other participants are sharing in this study.
Become a founding member
Founding members help decide what gets studied next — and join studies before they’re open to the public.
Reserve your seatCustom protocol
Describe what you're taking or planning.