Add an ending suggestion

[Quantum-Future]

The app gives suggestions and alerts for each phase, but no ending suggestion.
Currently, the timer can go on forever without an end suggestion. It's not healthy to do a fasting for too long periods.
It should warn the user about ending the fasting, based on your profile parameters (age, gender, BMI, etc). I don't know wich are the recommended max. times or how to calculate them, but I guess there must be some math formula.

[me444866]

Great idea.. but do you have simple rule of thumb formula for this? Formula should be safe for most of people .. and there is many variables for this.

[matbgn]

Given the fact that existing studies suggest that the earliest signs of autophagy may occur well before the ~24 h peak commonly reported in rodent liver studies—largely because animals were historically dissected at coarse, late time points—there is a strong argument for allowing users to define self-selected goals and treating these as soft targets (“green zones”) rather than hard thresholds.

Also letting the user give a single target golden goal besides theory could be a quick easy to implement solution, what do you think?

This approach better reflects biological variability and scientific uncertainty, and avoids the false precision implied by a single, fixed “autophagy start time.”

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BTW a more realistic rule of thumb, without actual strong direct human evidence, may more look like this:

Fasting Duration	What Usually Happens
< 12 h	Early metabolic changes; insulin declines; no strong evidence yet for increased autophagy.
~12–16 h	Metabolic shift toward fat oxidation; early ketosis begins in some individuals.
~16–18 h	Initiation of increased autophagy signals, particularly in metabolically active tissues such as the liver. (Biology Insights)

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Supporting Context: Early Autophagy Under Nutrient Deprivation

There is strong evidence that cells initiate autophagy rapidly under nutrient deprivation in vitro and in model organisms—often within hours, not days. This supports the plausibility of an earlier onset than the traditional ~24 h rodent liver peak:

• Dynamic Modeling of the Interaction Between Autophagy and Apoptosis in Mammalian Cells https://arxiv.org/pdf/1312.7149

However, translation from cell culture or short-lived organisms to whole-body human fasting remains uncertain, and timing should be treated as probabilistic rather than deterministic.

[gammexane]

I just found this app and it’s great, but it really needs a goal-setting feature. It would be much better if users could set a target duration (like 12, 16, or 18 hours) or choose from well-known fasting protocols such as 16:8, OMAD, 5:2, or ADF. Having a specific goal to aim for would be a huge improvement!

[825i]

I just found this app and it’s great, but it really needs a goal-setting feature. It would be much better if users could set a target duration (like 12, 16, or 18 hours) or choose from well-known fasting protocols such as 16:8, OMAD, 5:2, or ADF. Having a specific goal to aim for would be a huge improvement!

These are pretty lofty suggestions. :')

As I see it, the way the app is designed now is to start a fast and resolve to stick to it for at least up to 72 hours. After looking at the codebase and redesigning some things myself. I am not really sure how I would start adding a 'goal' feature without significant redesign or brainstorming.

[matbgn]

Why not keeping much of how it is now and simply put a second parallel time goal below the first bar of progress?

[825i]

Why not keeping much of how it is now and simply put a second parallel time goal below the first bar of progress?

I'm not sure what you mean. What would this do exactly? Could you mock something up and post it here?

[Quantum-Future]

Why not keeping much of how it is now and simply put a second parallel time goal below the first bar of progress?

I don't like having a 2nd progress bar, it would look redundand and a bit weird.

[Quantum-Future]

I think that some recommended time options could be given on the Profile page, using some formula based on profile data.
Maybe show 2 times: A) Minimum recommended time and B) Optimal time.
Since there is no single "golden rule", maybe we could use more than one formula to calculate A) and B) times, and give the choice to select wich formula to use.
Additionally, a Custom time may be entered by the user.

When the timer reaches the set time, the timer stops and an alert is given saying that the fasting period has ended.

[825i]

I tried implementing #56 today on top of other PRs I made. The profile page functions to me was extremely difficult to understand. I couldn't really get the feature to work very well. Other UI stuff I have had no real problem understanding or building.

Minimum recommended time and optimal time are already displayed in the app with the existing bars 😅. The absolute minimum is generally after 18 hours (glucose) but really minimum 24h to 30h for peak fat burning. Longer obviously for autophagy. Up to 72h for peak autophagy.

Additional formulas without any actual science backing is just feature creep and becomes another thing to do and manage. I can say that at least I won't be doing it.

The original comment (my interpretation) at the very top was to add a suggestion to end after eg. 72 hours. Then there's definitely some scientific evidence that can be added to that and it's something easily do-able. But goals, second progress bars etc. All of that is another thing entirely. But if you want to build that and submit a pull request, I doubt it would get rejected.