I see many issues with the OP
I have come not to trust my body’s signals on thirst and hunger. Water is a great resource for the body and mind, and drinking only when you think you feel thirsty means you’re not hydrating enough.
This will not always work when you have stuff to get done. While i have been practitioning IF and have increased my endurance in how long i can wait before eating, after a certain point in time , i need to eat something in order to continue being productive. Of course you are probably describing something different here, a process of eating as little as possible during the day.
[quote=“dreev, post:1, topic:1056”]I can generally speed that up to less than hour by exercising.
[/quote] That would count as false data in my line of thinking, since i define weight as taking a measurement at the same time every day and preferably after bowel movement and also after a minimum amount (5 hours) of sleep. Anything else I’ve noticed will give me a high variance of data that do not really matter. If I wake up on a bad day I will simply not record any number for the day (i also keep a separate record that doesn’t go to beeminder - of course this is only for 1-2 days, beyond that it means i have really gone off the road).
As has been argued many times (here as well), weight can not managed fully and should be beeminded with enough “working space”. That said, i see personal improvement (and thus beeminding) as a mental process, so any workflow that keeps you on the road without affecting other goals too much, is acceptable. However, if you need to be on extremely limited food and water consumption for more than a couple of days to stay on the road, it probably means the road is wrong 